feature: 1)appearance size: 3.5cm*2.0cm*1.4cm (l*w*h) 2)charging input inputac110~220v50/60hz 3) charge output: 300-500ma outputdc5.0v 4) machine battery: 400mah li-ion battery 3.7v 5) standby time: 12 days. working time 4-6 days 6) mini tf card expansion card; 9) continuous calls: 150-180 minutes 10) network system: gsm/gprs 11) storage temperature: -40 c to +85 c 12) working temperature -20 cto +55 c 13) humidity range non-condensing 5%--95% 14) gprs:upload60, tcp/ip 15) working voltage: 3.4 - dc 4.2v 16) standby current:: = 2.5ma 17) open sound control: current is 30ma 18) the current call: = 150ma 19) gsm positioning time: 25 seconds basic parameters: band gsm850/900/1800/1900mhz

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