Specifications:Color: BlackSize: 25 x 23x 23 mmThe USB cable length: 18cmBluetooth Version: Bluetooth V3.0+EDR. Compatible with V2.1、 V2.1、 V1.1Chipset: CSR6145Frequency range: 2.4GHzTransmission power: Class 2Transmission range: 10 MFile Format: A2DP music player、 headset and hands-free formatChannel: Support monaural mode and extended headset modeTalk time: 5 hoursStandby time: 200 hoursHow to use it:1. Press and hold on/off button until red LED and blue LED alternately flashing. This headset is now ready to be paired.2. Set your phone to search for the Bluetooth device.3. Select this headset from the result list.4. Enter pin code 0000.5. If the pairing is not succeeded、 please repeat the steps above.6. Blue LED flashes when the pairing is completed.Compatible with: all Bluetooth enabled devices such as mobile phones、 laptop、 table PCPackage includes:1 x Bluetooth earphone1 x Mini earphone1 x USB Cable1 x Ear hook(other accessories are not included)