Bluetooth V2.0+EDR

Bluetooth Profiles:Headset,Handsfree,OPP,TTS

Intergrated phonebook:Up to 300 contacts

Working range: Up to 10m

Transmission power:Class 2

Talk Time:Up to 12hours

Standby Time:Up to 300hours

Operating Temperature:-5 C to+55 C

Operating Humidity: 5-90%

Radio Frequency:2.401-2.483GHz

Battery;890mA Rechargeable Li-polymer1.Bright LCD caller ID and english name display;
2.TTS function, language choice(english/chinese);
3.Access 300 numbers with english name from cell phone;
4.Can scroll the 20 groups of incoming calls;
5.BL-5B battery.