Ultra Short Handle Long Lightweight Mini Bluetooth Headset Features: Graphene diaphragm, occupational sound engineering technology, built-in graphene diaphragm, high standard loudspeaker unit, improve high-frequency compliance, many details, clear voice, more penetrating sound quality IPX5 sports design, life class, sports sweat proof, daily- It is safer without expansion. High standard pure lithium button batteries are safer. Button batteries do not expand long-term use. They have longer service life and longer core microphone, accurate pickup, voice/call, equipped with a core microphone, you can talk clearly and communicate even in noisy environments! Long lasting and powerful power reserve, charging for half an hour, listening for about 4 hours Specification: Material: abs Transmission distance 10m and above The battery life is about 5-6 hours (single time) 20-25 hours (including the charging cabin) Charging of headset: 30min Charging interface TYPE-C Package List: 1x Bluetooth headset Notes: Due to different displays and lighting effects, the actual color of the product may be slightly different from the color shown on the picture. Thanks! Due to manual measurement, please allow slight measurement deviation.