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 Satellite GPS Messenger is light, small and easy to carry.
Comes with snug neoprene case armband, carabiner clip, car dash attachment and 1 set of replacement button covers.
Optional features include Track Progress automatic tracking service and guaranteed extraction assistance in countries lacking emergency services.
3 AAA Energizer Ultimate lithium batteries (included) provide approx. 3 months of standby power, 6 days in Track Progress mode and 3 days in SOS mode, or 700 SPOTcheck "OK" messages. Clear view of the sky is required.