Features: 1. Over Ear Design: The ear hook design gives a secure fit making it perfect companion for running, jogging or the gym. We've carefully crafted these earbuds to deliver a well-balanced sound with solid bass and an emphasis on mids and highs. 2.Multi-functional without line Control: this earbud best enables you to play/ pause music, adjust volume, skip tracks, accept or reject calls without line control. 3. Automatic pairing when power on, quick second connection. Up to 16-20 hours of listening time if fully charged 4. Reinforced design for sweat & water resistance during tough workouts or running. 5. Wide Compatibility: Compatible with most Bluetooth-compatible devices like: smart phones, MP3, MP4, Mac, laptop, tablet, desktop computer, portable music player. Notice: Actual color may be slightly different from the image due to different monitor and light effect. Please allow 1-3cm deviation due to manual measurement. Specifications: Supported protocols: A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.3 Transmission distance: 10 meters Battery capacity: 300mAh Standby time; 210 hours Talk/play time: 20/16 hours Charging time: about 1 hour Descriptions: Ultra-large volume, shocking bass, HIFI high fidelity, professional-grade sound quality, realistic on-the-spot shocking stereo The left and right ears are universal, buy two earphones and make it into a pair earphones with TWS function. Painless wearing of the rotating ear cap, 360° rotatable ear cap, adjust the angle, suitable for the contour of the ear. Include: 1 x Headphone 1 x Charging cable 1 x Manual