Item Size
49.6*40*16mm(watch host)
GSM Frequency
2G GSM 850/900/1800/1900 Mhz
Battery
500mAh Rechargeable Li-ion Battery
Web & APP Tracking
free for lifetime
Tracking Ways
GPS+LBS+WIFI Positioning
Special function
Heart beat and blood pressure detection;Sport/Pill Reminder;Music Play
Lifetime Free Tracking Platform /APP
http://www.gps123.org/