Features: BT 5.3 brings high data transfer speed, stable connection and low power consumption. True wireless high-performance headphones, automatically pair after taken out from the charging case. 45mAh battery single ear earphone, and charged automatically in the 800mAh charging case, long battery life. Built-in high-definition microphone, intelligent noise reduction, delivers clearer and more real talking sound in stereo mode. Wide application in daily life, driving, listening to music, exercising, playing games, watching videos. Specification: BT version: 5.3 Standby time: approx. 90 hours Headset capacity: 45mAh Charging case capacity: 800mAh Transmission distance: 10m Listening time: 6 hours Charging voltage: DC5V/1A Operation mode: Touch Package size: 109 * 88 * 43mm Package weight: 123g Package List: 2 * Headphone 1 * Charging Case 1 * Charging Cable