<ul><li>Product Name: GRUTIK P9 pro max</li><li>Battery capacity: 400mAh</li><li>Play time: about 10h</li><li>Standby time: about 120h</li><li>Charging time: about 1h</li><li>Build-in microphone: yes</li><li>TF card: support</li><li>Charging port: USB.</li><li>Material: Sheepskin, aluminum alloy, stainless steel</li><li>Operation Range: Up to 10 meters</li><li>Compatible phone: Compatible with Android , IOS , Microsoft and so on , 100% of the phone with BT</li><li>Function: Binaural calls, auto pairing, auto charging, with ANC</li><li>Real Noise Cancellation</li><li>Rename,GPS,Spatial Audio supported.</li><li>Best And Latest Version in the Market.</li><li>All QC checked before shipping</li></ul>