Wireless Earbuds Bluetooth Headphones Earphones For Android Samsung Apple iPhone Description [Upgrade high-fidelity sound quality] With Bluetooth 5.0 and high-definition rendering technology, you can produce incredible sound quality and real sound performance whether you are talking or listening to music. Offers faster pairing, stable connection and signal transfer. [Built-in dual microphone] The built-in microphones on both sides of the earphone allow you to have a hands-free call from one. Clear, complete quality conversations. This means that you can play the same music / movie alone or with your friends and enjoy clear stereo with two headphones if needed. Specifications: Bluetooth version: V5.0 Battery capacity：Headphone 45mAh，Charging box 250mAh Music playing time : About 4 hours Charging voltage/current: 5V/1A Transmission distance: About 20 meters Supporting Agreement:A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.3 Package Include: 1 pair of Bluetooth headset 1 x Charging Box 1 x USB Cable 1 x User Manual