Edifier Comfo Q Ear Cuff Wireless Earphones Open Ear Purchased new and unopened on Mercari. Used only once for listening after purchase. The outer box has a stain circled in red in the 4th photo, which was present from the time of purchase. 【Gentle Fit for Your Ears, Perfect for Exercise and Outdoors】The Edifier Comfo Q ear cuff adopts a nickel alloy wire with shape memory properties, weighing only 5.4g per ear, achieving a comfortable fit. It can naturally fit most ear shapes. With excellent stability, you don't have to worry about it falling out of your ears during exercise or daily activities, allowing you to fully enjoy sports and the outdoors. The symmetrical design allows you to store it in the charging case without distinguishing between left and right. It can be worn freely on either ear. 【Don't Compromise on Sound Quality Even with Ear Cuffs, Call Noise Reduction Function】The Comfo Q features a 12mm dynamic driver and a titanium-coated composite diaphragm, providing clear stereo sound. With directional acoustic technology incorporating a unique acoustic structure, it suppresses sound leakage while achieving immersive high-quality sound. AI algorithm technology separates the human voice from surrounding noise, ensuring that only your voice reaches the other party clearly, even in noisy environments. 【Soft and Comfortable All Day Long, Equipped with Drainage Function】Whether you're commuting, working, or busy with housework... you can enjoy music anytime and comfortably in any scene. Equipped with a drainage function, and by utilizing the dedicated app, the earphones can automatically and quickly drain any moisture that has entered inside. 【8 Hours of Continuous Playback on a Single Charge, Supports Fast Charging】With a single charge, the earphones alone can play music for up to 8 hours, and with the charging case, up to 32 hours of music playback is possible, providing strong support for long-term use. Supports fast charging, so even for sudden outings or commuting, 15 minutes of charging provides about 2 hours of playback. Enjoy your favorite sounds anytime, anywhere. 【Multi-Point Connection, Free Equalizer Creation】Supports Bluetooth 5.4, achieving stable connectivity and low latency. Supports multi-point connection, allowing you to quickly switch between music playback, video viewing, and calls on two devices simultaneously. Using the dedicated app EDIFIER ConneX, you can freely create your own equalizer settings.