25 mAh(Earphone)/ 480 mAh(Charging case) battery Binaural Low-Latency Bluetooth 5.0 Transmission: Bluetooth connection stability and ultra-low latency achieving a leading level in the industry. Hybrid Active Noise Cancellation: In-Depth noise reduction for an impressive sound experience. Single charge provide 24 hours Music Play back, 15-minutes charge provide 9 hours music playback/calls with ANC (active noise cancellation) On. Support Fast charging and wireless charging. Wearing Detection: Automatically connects when the case is opened, and disconnects when you put the headphones back to the case. Music pauses when taken off, and continues to play when put on again. IP54 Dust and Water Resistance: Earphones are professionally designed and are certified IP54 dustproof and waterproof. In-ear ergonomic design, more exquisite wearing experence with improved, smaller design with