Garmin Alpha 200 Handheld The Alpha 200i dog tracking and training system lets you monitor up to 20 dogs from up to 9 miles (depending on dog device) on a 3.5” display with a 2.5-second update rate. The Alpha 200i has easily controlled training functions by using the button-operated, dog-focused design. You’ll be given access to premium Garmin navigation features, such as pre-loaded TopoActive maps, BirdsEye Satellite Imagery with direct-to-device downloads and built-in three-axis compass and barometric altimeter. Now, inReach® technology adds two-way messaging and interactive SOS alerts for peace of mind while you’re in the field (active satellite subscription required; jurisdiction restrictions may apply). FEATURES Features sunlight-readable 3.5” capacitive touchscreen display and a button-operated, dog-focused design for quick, minor adjustments Easily set up and monitor up to 20 dogs from up to 9 miles away with a 2.5-second update rate by using multiple global navigation satellite systems (GPS and Galileo) Dog list and group management lets you keep inactive dogs in the system for easier setup Interactive SOS alerts and two-way messaging via the 100% global Iridium® satellite network (active satellite subscription required; jurisdiction restrictions may apply) Pre-loaded TopoActive maps, direct-to-device BirdsEye Satellite Imagery downloads and built-in three-axis compass and barometric altimeter User-replaceable battery lasts up to 20 hours; up to 15 hours with inReach® technology enabled 18 levels of correction, including vibration and adjustable tones Backward compatible so you can keep your existing collars and other Alpha® compatible devices; transfer location data between compatible Garmin devices