BH-503 Bluetooth Headphone Headset Earphone For Mobile Phone, PDA,Laptops, MP3/4/5 (Black&Red) Bluetooth Version: V2.0 Frequency: 2400.0-2483.5MHz Talk Time: Up to 7 Hours Nominal Charging Time: 2-3 Hours Package included: 1XBluetooth Earphone 1 x USB cable