Garmin Alpha 100/TT 15 Mini Bundle MULTI-DOG TRACKING - Track up to 20 dogs or fellow hunters when using additional Alpha 100 handhelds or TT 15 (standard and/or mini) dog devices (may also use T 5 dog devices for tracking only), each sold separately. EMERGENCY ALERT - Ability to send your location with an emergency alert to other Alpha users within the area. PRELOADED MAPPING - Preloaded detailed TOPO U.S. 100K maps comparable to 1:100,000 scale USGS maps. COLOR TOUCHSCREEN - 3 color touchscreen display. Display type : Transflective, 65-K color TFT touchscreen VIEW DOG STATS- Use the included electronic compass to measure each dogs speed, distance and the direction being traveled, plus receive notifications when your dog is on-point or treed; also includes barometric altimeter