Features: Bone-Conduction transmission technology to ensure sound quality and comfort to greater extent. Bluetooth-compatible5.2 stable connection support to connect to phones, tablets, laptops. Ear-hanging ergonomic design, wear all day without tiring ears. Comfortable and light. The single battery life of the earphone is as long as 68 hours phone call time, with high-quality communication experience-. Innovative earhook, duitable for office study/daily communication/travel/sports/travel. Specifications: Item:V19 Bone-conduction Single-ear Earhook Bluetooth-compatible Headset Color: Black/White/Green/Pink/Blue Bluetooth-compatible version: 5.2 Bluetooth-compatible distance: approx15m/49.2ft Headphone battery capacity: 300mAh Charging time: approx 2H Music playback time: 12H Standby time: 68 hours Interface: Type-C Size:approx 7x3.3x1.1cm/2.75x1.3x0.43in Package Includes: 1PC Earphone 1PC Charging cable 1PC Instruction manual note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.