【Brand New】 Bluetooth 5.4 Wireless Headphones with Noise Canceling Approximately 10 hours of continuous playback. - Model Name: Quiet2 - Function: ANC (Active Noise Canceling) - Bluetooth Version: Bluetooth Ver. 5.4 - Continuous Playback Time: Approximately 10 hours - Charging Method: USB Charging, Type-C - Accessories: Charging Cable - Color: White