The COWIN E7 are wireless headphones with active noise cancellation that reproduce powerful bass and clear mid-high frequencies. They support Bluetooth 5.0 for a stable wireless connection. They also have a built-in microphone for hands-free calls and a long-lasting battery that provides up to 30 hours of playback, making them suitable for various situations such as commuting, remote work, and travel. Operation has not been confirmed. Please check the condition in the photos. Please also check the accessories in the photos. #WirelessHeadphones #NoiseCancelling #COWIN #E7 #AudioEquipment Box: 14