Model Number: AVP031bb Brand Name: ATE Key Specifications/Special Features: Product supports GSM 850/900/1800/1900 network and GPRS standard quad-band and can switch seamlessly between different networksCompact, signal strength, voice, stable performance, the long standby, globallyFunction is its greatest advantagesSize: 43.2x32x13.6mmWeight: 30g

Connection: GSM/GPRS

GSM frequency: 850/900/1800/1900

Charger input: 110-220V AC,50/60Hz

Charger output: output 5.0V DC/500mA

Battery: chargeable 3.7V/500mAh Li-ion battery

Storage temperature: -40 to85°C

Working temperature: -20 to55°C

Humidity: 5-95% non-condensing