The battery lifetime of the device depends on the settings as configured in the app. The less often location updates are sent, the longer the battery lasts.
The ODIN GPS-03 can last from anywhere from 16 hours with real-time tracking to over 2 weeks with location updates every 2 hours. You can configure the location update frequency (and thus the average battery lifetime) through our app. This can be done entirely remotely, so you are always able to choose the most appropriate setting for your situation.