Powerful Active Noise Cancellation (ANC) Tec: Using hybrid dual-fed active noise cancelling technology, double sound cancelling. Four noise-detecting microphones pick up and filter out up to 95% low- and mid-frequency sounds. Keep focusing on your own world without being disturbed. Excellent Hi-Fi Sound Quality: Different from ordinary Bluetooth headphones, ZH700 supports aptx decoding, using a composite metal diaphragm and large diameter 40mm driver, while enjoying deep bass and clear treble, making it a pleasure to wear the wireless headphones every time! Non-Pressure-Sensitive Protein Earmuffs: The comfortable and soft protein earmuffs make you not feel the presence of earphone. The memory foam have good air permeability and feels the body temperature and automatically relieves your stress when you wire the over-ear headphones. Go deeper into your music, work, and relaxation. Bluetooth 5.0 & Voice Assistant: Enjoy the stable wireless connection of Bluetooth 5.0 technology and experience the wireless range up to 15m. It automatically enters the " pairing mode " when the headphones is turned on,and connect up to two devices. It can connect to any Bluetooth device, supporting Siri/Google Assistant voice assistant. All-Day Playing & Fast Charge: Zamkol wireless headset allow playing music for up to 30 hours in noise reduction mode. A short 10-minute charge gives you 5 hours of listening. Using tpye-c to fast charge for 1 hour, the headset can be fully charged.