Strictly select skin-friendly, comfortable and high-elastic materials, which can be folded at will without deformation, super comfortable for long-term wearing Innovative sound insulation technology, completely solves the problem of sound leakage and protects your privacy Built-in ENC noise reduction for high-definition calls, automatic silicon microphone noise reduction, and accurately picking up human voices High-quality new lithium battery, with strong battery life New concept ear clip type, ergonomic design, stable wearing, clear sound quality, suitable for sports Lightweight, no sense of restraint to ears Specifications: Bluetooth-compatible version: V5.3+EDR Listening time: about 25 hours Earphone battery: 150mAh Wireless frequency: 2.4GHZ Support protocol: A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.3 Transmission distance: 10 meters Charging voltage/current: 5V/1A Charging time: about 2 hours Standby time: 200 hours Horn impedance: 13MM 32 Mic sensitivity: -42dB Package included: 1 x Bluetooth-compatible Headset 1 x Charging Cable 1 x English and Chinese User Manual