Up to 400 days with one position a day offers the rechargeable Li-Ion (1500mAh/3.7V) battery of ST950 standalone GPS tracker, consult with Suntech if is possible put one rechargeable battery of more mAh to improve the duration time and have more autonomy in the GPS asset tracking. 3 GPS tracking modes accept Suntech ST950 GPS tracker that you can be use depending your need: (sending SMS text messages with commands, using the Suntech online server, from an external tracking management platform "edit default IP/port"), ST950 send data through the (TCP, UDP, SMS) protocols. Thanks to the integrated (GPS antenna / GSM antenna) of ST950 standalone GPS tracker, you can be avoid the unnecessary wire installation and put Suntech GPS tracker in reduced spaces of "mobile asset / vehicle / motorcycle". Suntech ST950 integrate an "panic button" for generating (SOS emergency messages) protecting the driver of "mobile asset / vehicle / motorcycle" when detect any danger and make click on the "panic button", the SOS messages are sending to a mobile phone or can be controlling from the external tracking management platform and the Suntech server. Suntech has designed ST950 waterproof GPS tracker with two different IP protections: (using magnets holder IP66 - without magnets holder IP65), you can be cover different requirements in the GPS asset tracking or GPS personal tracking in any type of extreme weather condition.