The WeHunt GPS doesn't have an on/off- button. The device turns automatically into standby-mode when it's not in motion.
The GPS is made to put on a dog collar or in the pocket of a dog vest.
The GPS has a built in motion sensor, when the GPS feels a vibration or motion it's activated. If needed, shake the GPS to wake it from Standby-mode.
The G-force during a car ride is low and usually turns the GPS to Standby-mode.