Features: Small size magnetical induction recharge box, easy to recharge and convenient to carry. One-key operation to control calls, music,volume and voice assistant. Sweatproof. No need to worry about sweating during exercise. BT5.0 chip, long transmission distance, high anti-interference ability, low power-consumption. Ergonomic design to fit the ear cannal,single and binaural freely switch. Noise cancelling, HiFi sound quality, dynamic unit design, giving you nice listening experience.