Model: G99 (safety monitoring) SOS watch G99 functions: Sos: when user press the sos button. Watch will do: 1) call sos mobile phone number which has been set already. 2) call server so service center will know elderly need urgent help. 3) send gps location to server so nurse can find elderly soon. Gps track: 1) user can send his own location to server after press sos botton. 2) server can track user's location anytime. 3) watch can send location every 5 or 10mins aotumatically as you need. Fall detector: If watch only move,will not alert. Move & crash, mean fall down, then alert. Remove alert: If they remove watch, will send alert to emergency number or server. Product name 3G GPS SOS healthcare watch CPU MTK6572 Cortex A7 Dual Core 1.3Ghz wearable gsm GPS position GPS+LBS ,Supported Network GSM 850/900/DCS 1800/PCS 1900 + WCDMA 2100 Connection Bluetooth 4.0LE WIFI 802.11 b/g/n GPS Camera 3.0 Mega Pixel RAM/ROM 512MB / 4GB Battery 600mAh@ up to 4hrs talking time/ 8hrs Music playback SOS button+fall Alert Supported SIM card micro SIM supported heart rate test Supported Android android 4.4 Sensor G-sensor, E-Compass, Gyroscope