90 Extended Life "Hibernator" Battery Case w/ Inactivity Motion Sensor

After 5 minutes of inactivity, the case and device automatically shuts down, saving battery power s until the vehicle begins moving again.

Motion Sensor Conserves Battery Life For Longer Tracking

Built into this waterproof protective case, is an extended battery with motion sensing to enhance your precious battery life. This works by only activating the unit when the device is in motion. No motion, no battery drain. Perfect for vehicles or objects which are on the move and may stop in one spot for an extended period of time.

At only 6 1/2 x 4 x 1 3/4 inches, the unit operates on 8 "AA" standard alkaline batteries. Battery life can be maximized by using lithium batteries.