"Roam the unknown. The Garmin Tread Powersport Off-Road GPS Navigator with Ride Radio serves up the best off-road powersport navigator you've ever used, with Group Ride Radio and preloaded topography for better off-road adventures. Created specifically for side-by-side, ATV, and snowmobile enthusiasts, the Tread navigator is built to withstand extreme terrains, temperatures, and weather. Stay connected to your friends with the push-to-talk fist mic and group tracking for up to 20 riders, no cell signal required. The navigator includes topographic maps of North America, public land boundaries, U.S. Forest Service roads and trails with motor vehicle use maps, and downloadable BirdsEye Satellite Imagery. 3.5""H x 5.8""W x 1""D. Easy-to-use interface Designed specifically for off-road enthusiasts Highly resistant to rough terrains, temperatures, and weather Push-to-talk fist mic Group tracking for up to 20 riders Preloaded topography"