Purchased from an authorized retailer one year ago. Selling due to decluttering, as it's only used once or twice a month. Operation confirmed. Smoke-free environment. No pets. Ships with the main unit only. A USB-C cable is required for charging. There are no scratches or stains on the surface, and the condition is good. Please check the photos. The instruction manual can be viewed at the following link: https://www.audio-technica.co.jp/support/manual/ATH-HL7BT ● Supports multi-point connection for simultaneous connection to two Bluetooth devices, low-latency wireless ● Wired connection supported, so you don't have to worry about battery life ● Lightweight and comfortable for long periods of wear ● Open-air structure that releases the flow, allowing natural sound to resonate with the surrounding air ● Approximately 220g, one of the lightest wireless headphones for home use ● Compatible with the dedicated "Connect" app. Customize sound quality, volume levels, balance, etc., to your liking. ● Up to approximately 20 hours of continuous playback, and supports quick charging for approximately 150 minutes of use with a 10-minute charge ● Beamforming microphone technology ensures clear voice transmission even in noisy environments ● The open-air structure provides a non-occlusive feel, allowing for natural online calls while wearing the headphones.