Sprecifications: CSRV2.0 Class 2 Frequency band: 2.40GHz ~ 2.48GHz Talk time: 6.0 hours Standby time: 160 hours Workable Range: 10m (30 feet) Weight:6.5g Charging time: 1.5~2hours Battery: Li polymer, 85 mAh Profile Supported: Handsfree & Headset Should any demand or request, please feel free to let us know. Crystal Lan Tendystar Telecom Co., Ltd. Tel: 86-20-84318898 Fax: 86-20-84328489 E-mail: MSN: Skype: crystallanbb Website: