Thank you for viewing. True Wireless In-Ear Headphones DENON AH-C830NCW AHC830NCW - Operation is fine, but battery degradation is noticeable. - Battery life is approximately 1-2 hours for the earphones alone. - There is a slight contact issue between the earphones and the case. (However, this seems to be a common issue with this model.) - No charging cable included. Box, instruction manual, and ear tips are included. - No cracks are visible, but there are scratches and signs of use. Thank you. —————————- Brand: DENON Wearing Style: Separate Left and Right, Completely Independent Earphone/Headphone Type: Canal Type Color: Black系 (Black-based) Wireless/Wired Connection: Wireless Earphone/Headphone Features: Noise Canceling, Microphone, Ambient Sound Mode, Waterproof, Splashproof, Remote Control Wireless Standard: Bluetooth Bluetooth Version: Bluetooth 5.0 Bluetooth Codec: AAC, SBC IP Standard (Waterproof Standard): IPX4 Drive System: Dynamic Type Driver Size (mm): 11.0 mm Charging Port: USB Type-C Charging Time: 2.0 hours Weight (g): 10.6 g