Business Handsfree Earphone Wireless Bluetooth Headset For Cell Phone Samsung HTC Motorola Black Supporting Edition: Bluetooth V2.1 6 Colors for your choice:?Black, Pink, Blue, Red, Gold, Purple Suitable for business talk or meeting Frequency Range: 2.4GHz-2.4835GHz Package Content: 1 x Bluetooth headset;1 x USB charging cable;1 x AC/DC Adapter (US Plug);1 x Product manual