BDKING 2018 Upgrade Bluetooth Headset, Wireless Bluetooth Earpiece for Hands Free Calling Name: V8S Colour: Black Version: V4.1 Chip: CSR8615 Battery capacity: 90mah Call duration: 8-10 hours Standby time: 200 hours Transmission distance: 10 meters Charging time: 1-2 hours How to use? Bluetooth match For the first time to use the headphone,it need pair manually as the follow steps. a press "play/pause" button, power on the headphone, the headphone will report "Power on". bvate your mobile phone and search for available Bluetooth devices. cct "V8", the headphone will report "connected". dr the first cellphone pairing successfully, please turn off the headphone, also disconnect the first phone. ese pairing for the second cellphone as the above steps, then connected the first phone,now two phone connected at the same time. Voice dialing Ensure your mobile phone can support the voice dialing function. In standby mode, short press the "TALKING" button to activate, the voice dialing function in mobile phone will be automatically activated. (Please refer to the user manual). Package Includes 1 * Bluetooth Headphones 1 * Charging cable 2 * Ear Cap 1 * User Manual Risk-free Guarantee: We offer 30-Days 100% MONEY-BACK GUARANTEE or REPLACEMENT and 365-DAYS WARRANTY for any quality-related issues. Buy with Confidence Now! About us: BDKING focus on providing high quality products. If you have any questions or you are not satisfied with the item you receive, please contact us and we will provide you with satisfied service.