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"Home Assistant" => "HomeAssistant" search & replace Added schema change for "exit" feature. Added initial Devices.md
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Philip Abbey
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Devices.md
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Devices.md
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# Device Support & Characterisation
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A page just to note a practical limit on support for some older devices.
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## Application Memory Usage
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On an `instinct2x` device:
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| Version | Free Memory (bytes) on `instinct2x`| Free Memory (bytes) on `venu2`|
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|:-------:|-----------------------------------:|------------------------------:|
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| 3.5 | 62,360 | - |
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| 3.6 | 65,696 | 53,832 |
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A user has reported a maximum of 26 items with Ver 3.5. This measurement has shown that each menu item requires about 1.0~1.2 kB. Using the worked example below it is possible to predict how many menu items your particular device might be able to support by using indicative figures.
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## Worked Example
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As a worked example, for Ver 3.6 working on an `instinct2x` device:
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| Feature | Memory (bytes) | Cost (bytes) |
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|--------------------------------------|---------------:|-------------:|
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| Declared available to application | 98,304 | |
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| Measured available to application | 94,112 | (4,192 less) |
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| Application used | 65,696 | |
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| Free before fetching menu definition | 28,416 | |
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| Free after fetching menu definition | 15,792 | 12,624 |
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| Free after construction | 936 | 14,856 |
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Our test menu presently contains a mix of 28 items, consisting of nested group, toggle, tap, info and numeric items with templates. So each item requires (12,624 + 14,856) / 28 = 982 bytes.
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## Garmin Devices
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The following table details all the devices as at 1 October 2025 and whether they are supported by Garmin HomeAssistant. The available application memory is also detailed so that it can be compared to an application version listed above. Of particular concern are the 'Instinct' range of devices, being the smallest we currently support. New feature requests are now being vetted against how they might affect our ability to support the 'Instinct' range of devices. At some point support may have to be withdrawn in order to allow the Garmin HomeAssistant application to grow further.
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| Device | Supported | Application Memory |
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|----------------------------|:---------:|--------------------:|
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| d2bravo | N | 65,536 |
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| d2bravo_titanium | N | 65,536 |
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| fenix3 | N | 65,536 |
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| fenix3_hr | N | 65,536 |
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| fr230 | N | 65,536 |
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| fr235 | N | 65,536 |
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| fr630 | N | 65,536 |
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| fr920xt | N | 65,536 |
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| vivoactive | N | 65,536 |
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| descentg1 | Y | 98,304 |
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| instinct2 | Y | 98,304 |
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| instinct2s | Y | 98,304 |
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| instinct2x | Y | 98,304 |
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| instinctcrossover | Y | 98,304 |
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| approachs60 | N | 131,072 |
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| enduro | Y | 131,072 |
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| fenix5 | Y | 131,072 |
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| fenix5s | Y | 131,072 |
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| fenix6 | Y | 131,072 |
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| fenix6s | Y | 131,072 |
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| fenixchronos | Y | 131,072 |
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| fr245 | Y | 131,072 |
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| fr55 | Y | 131,072 |
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| fr645 | Y | 131,072 |
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| fr735xt | N | 131,072 |
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| fr935 | Y | 131,072 |
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| instinct3solar45mm | Y | 131,072 |
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| instincte40mm | Y | 131,072 |
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| instincte45mm | Y | 131,072 |
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| venusq | Y | 131,072 |
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| vivoactive3 | Y | 131,072 |
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| vivoactive3d | N | 131,072 |
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| vivoactive_hr | N | 131,072 |
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| edge_520 | N | 262,144 |
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| fr255 | Y | 524,288 |
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| fr255s | Y | 524,288 |
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| approachs50 | Y | 786,432 |
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| approachs7042mm | Y | 786,432 |
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| approachs7047mm | Y | 786,432 |
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| d2airx10 | Y | 786,432 |
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| d2mach1 | Y | 786,432 |
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| descentg2 | Y | 786,432 |
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| descentmk343mm | Y | 786,432 |
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| descentmk351mm | Y | 786,432 |
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| enduro3 | Y | 786,432 |
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| epix2 | Y | 786,432 |
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| epix2pro42mm | Y | 786,432 |
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| epix2pro47mm | Y | 786,432 |
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| epix2pro47mmsystem7preview | Y | 786,432 |
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| epix2pro51mm | Y | 786,432 |
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| fenix7 | Y | 786,432 |
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| fenix7pro | Y | 786,432 |
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| fenix7pronowifi | Y | 786,432 |
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| fenix7s | Y | 786,432 |
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| fenix7spro | Y | 786,432 |
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| fenix7x | Y | 786,432 |
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| fenix7xpro | Y | 786,432 |
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| fenix7xpronowifi | Y | 786,432 |
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| fenix843mm | Y | 786,432 |
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| fenix847mm | Y | 786,432 |
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| fenix8pro47mm | Y | 786,432 |
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| fenix8solar47mm | Y | 786,432 |
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| fenix8solar51mm | Y | 786,432 |
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| fenixe | Y | 786,432 |
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| fr165 | Y | 786,432 |
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| fr165m | Y | 786,432 |
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| fr255m | Y | 786,432 |
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| fr255sm | Y | 786,432 |
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| fr265 | Y | 786,432 |
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| fr265s | Y | 786,432 |
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| fr57042mm | Y | 786,432 |
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| fr57047mm | Y | 786,432 |
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| fr955 | Y | 786,432 |
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| fr965 | Y | 786,432 |
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| fr970 | Y | 786,432 |
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| instinct3amoled45mm | Y | 786,432 |
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| instinct3amoled50mm | Y | 786,432 |
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| instinctcrossoveramoled | Y | 786,432 |
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| marq2 | Y | 786,432 |
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| marq2aviator | Y | 786,432 |
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| system8preview | N | 786,432 |
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| venu2 | Y | 786,432 |
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| venu2plus | Y | 786,432 |
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| venu2s | Y | 786,432 |
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| venu3 | Y | 786,432 |
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| venu3s | Y | 786,432 |
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| venu441mm | Y | 786,432 |
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| venu445mm | Y | 786,432 |
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| venusq2 | Y | 786,432 |
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| venusq2m | Y | 786,432 |
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| venux1 | Y | 786,432 |
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| vivoactive5 | Y | 786,432 |
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| vivoactive6 | Y | 786,432 |
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| approachs62 | N | 1,048,576 |
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| d2air | Y | 1,048,576 |
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| edge1030 | Y | 1,048,576 |
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| edge1030bontrager | Y | 1,048,576 |
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| edge1030plus | Y | 1,048,576 |
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| edge1040 | Y | 1,048,576 |
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| edge1050 | Y | 1,048,576 |
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| edge520plus | Y | 1,048,576 |
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| edge530 | Y | 1,048,576 |
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| edge540 | Y | 1,048,576 |
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| edge550 | Y | 1,048,576 |
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| edge820 | Y | 1,048,576 |
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| edge830 | Y | 1,048,576 |
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| edge840 | Y | 1,048,576 |
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| edge850 | Y | 1,048,576 |
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| edgeexplore | Y | 1,048,576 |
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| edgeexplore2 | Y | 1,048,576 |
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| edgemtb | Y | 1,048,576 |
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| edge_1000 | N | 1,048,576 |
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| epix | N | 1,048,576 |
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| fr645m | Y | 1,048,576 |
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| legacyherocaptainmarvel | Y | 1,048,576 |
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| legacyherofirstavenger | Y | 1,048,576 |
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| legacysagadarthvader | Y | 1,048,576 |
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| legacysagarey | Y | 1,048,576 |
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| venu | Y | 1,048,576 |
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| venud | Y | 1,048,576 |
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| venusqm | Y | 1,048,576 |
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| vivoactive3m | Y | 1,048,576 |
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| vivoactive3mlte | Y | 1,048,576 |
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| vivoactive4 | Y | 1,048,576 |
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| vivoactive4s | Y | 1,048,576 |
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| d2charlie | N | 1,310,720 |
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| d2delta | Y | 1,310,720 |
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| d2deltapx | Y | 1,310,720 |
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| d2deltas | Y | 1,310,720 |
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| descentmk1 | N | 1,310,720 |
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| descentmk2 | Y | 1,310,720 |
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| descentmk2s | Y | 1,310,720 |
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| fenix5plus | Y | 1,310,720 |
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| fenix5splus | Y | 1,310,720 |
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| fenix5x | Y | 1,310,720 |
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| fenix5xplus | Y | 1,310,720 |
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| fenix6pro | Y | 1,310,720 |
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| fenix6spro | Y | 1,310,720 |
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| fenix6xpro | Y | 1,310,720 |
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| fr245m | Y | 1,310,720 |
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| fr745 | Y | 1,310,720 |
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| fr945 | Y | 1,310,720 |
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| fr945lte | Y | 1,310,720 |
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| marqadventurer | Y | 1,310,720 |
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| marqathlete | Y | 1,310,720 |
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| marqaviator | Y | 1,310,720 |
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| marqcaptain | Y | 1,310,720 |
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| marqcommander | Y | 1,310,720 |
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| marqdriver | Y | 1,310,720 |
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| marqexpedition | Y | 1,310,720 |
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| marqgolfer | Y | 1,310,720 |
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| gpsmap66 | Y | 2,359,296 |
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| gpsmap67 | Y | 2,359,296 |
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| gpsmap86 | N | 2,359,296 |
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| gpsmaph1 | Y | 2,359,296 |
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| montana7xx | Y | 2,359,296 |
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| oregon7xx | N | 2,359,296 |
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| rino7xx | N | 2,359,296 |
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