Appearance size: 3.5cm*2.0cm*1.4cm (l*w*h)/1.38*0.79*0.55"
charging input: ac 110-220v 50/60hz
charging output: dc 5.0v 300-500ma
machine battery: 3.7v 400mah li-ion battery
standby time: 12 days
working time 4-6 days
expansion card: support mini tf card
continuous call time: 150-180 minutes
network standard: gsm/gprs
storage temperature: -40°c to +85°c
operating temperature: -20 ° c to +55 ° c
humidity range: 5%-95% non-condensing
gprs: upload60, tcp/ip
working voltage: 3.4-4.2v dc
standby current: about 2.5ma
turn on voice control current: about 30ma
call current: about 150ma
gsm positioning time: 25 seconds
frequency band: gsm 850/900/1800/1900mhz