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GPSMAP 8422 allows you to share features with other compatible GPSMAP units such as radar
Panoptix LiveScope is live
stainless steel ball bearings help create impressive working loads for these tiny 15mm blocks
Pro-Fish and 700/1000 series windlasses
Super-fast 230KBs operation
Garmin Bike Speed Sensor Boat Star GPSMAP 8422 allows you toBike Speed Sensor Monitor your speed as you ride with this easy to install wireless sensor. The speed sensor attaches to the hub of either wheel and self calibrates with your Edge to give you accurate speed and distance at all times, including indoors on the turbo trainer. Simply attach the sensor and ride. With no magnets or other exposed parts to line up, this sensor is easy to install, maintain and move between bikes. *Water rated to 1 ATM; ANT+