Features: Real-time GPS tracking with online map. Simple SMS message command (2G SIM card required). SOS alarm button to call for help. 2-way voice communication, just like a phone call. Fall detection for patients, children, elderly. Charging base for convenient charging. Mini size and light weight, with a loop for attachment to your keyring. Also good for tracking pet, vehicles, property. Note: This GPS tracker is not applicable to the networks in Japan, Korea, Singapore and Australia.