Feature:
appearance size: 3.5cm*2.0cm*1.4cm (l*w*h)
charging input inputac110~220v50/60hz
charge output: 300-500ma outputdc5.0v
machine battery: 400mah li-ion battery 3.7v
standby time: 12 days. working time 4-6 days
continuous calls: 150-180 minutes
network system: gsm/gprs
gprs:upload60, tcp/ip
working voltage: 3.4 - dc 4.2v
gsm positioning time: 25 seconds