Affordable lock-wire GPS tracker with 3 year battery life (1 position per day) - primarily made for containers. If / when the thread is cut, it automatically notifies the sender via alarm. This ensures both against theft, but also as a message to the sender that the recipient has received the container. In addition to GPS position, you also get the status of remaining battery capacity and speed of the container. The thread can be replaced after the journey and replaced by a new thread - see options on length. The battery is a non-rechargeable Li-ion battery 800 mAh.