The SPOT II Satellite GPS Messenger offers improved GPS acquisition and a 30% smaller and lighter design to send your location, status, messages and calls for help. The SPOT II Satellite GPS Messenger offers improved GPS acquisition and a 30% smaller and lighter design to send your location, status, messages and calls for help. New features and enhancements include faster and stronger GPS function, GPS acquisition light, sent message light and safety flaps over SOS and Help buttons. New design also sports an extra message button, separate tracking button, tracking message queue, replaceable button covers and illuminated buttons. An affordable alternative to PLBs, satellite phones and cell based GPS trackers, SPOT II provides virtually full coverage in North America, Europe and Australia. Also covers portions of South America, northern Africa and northeastern Asia, along with thousands of miles of offshore areas. SOS function dispatches emergency responders to your exact location. Use Help feature to request assistance from friends or family. Check inOK allows you to transmit your location and that you are okay. Track your progress by sending and saving points along your route to Google MapsTM. GPS satellites determine location commercial SPOT satellites transmit information. Rugged unit works in extreme temperatures 22deg to 140degF and altitudes 328 ft. to 21,325 ft. and can be submerged 1m for up to 30 minutes. SPOT II Satellite GPS Messenger is light, small and easy to carry. Optional features include Track Progress automatic tracking service and guaranteed extraction assistance in countries lacking emergency services. 3 AAA lithium batteries included provide up to 3 months of standby power, 7 days in Track Progress mode and 6 days in SOS mode, or 700 Check inOK messages. Requires 99 annual subscription 12.