Product Name: Bluetooth Headset CSR/BC4 Bluetooth version: Version 2.0 Parameter: Range of Frequency:2.4GHz Spectrum Profile Supported:Headset and Handfree Talk Time:Up to 4.5 Hours Normal Charg Time:with 3 Hours Standy Time:Up to 100 Hours ... - Update: 2007-09-11

a??Operation range:Up to 10 meters a??Bluetooth Version: V2.0 a??CSR chipset,BC04 a??Capacity:Up to 9 hours talk time and 300 hours stand-by time a??Reversible hook for either ear with smooth material for long hold. a??Activation of voice recogn... - Update: 2007-09-11