BT 5.0 supports binaural high-definition calls to ensure that every call is clear and smoothIPX4 waterproof design so not to afraid of rain or sweatTransmission distance is 10m, headphones capacity is 40mAh and noise reduction version is CVC8.0Master-slave mode can be switched at will, bringing a different true wireless headphone experienceLong endurance time, the 1200mAh charging case provides 30 hours battery life