【Ear Cuff Type - Single Earring / With Case】 Purchased new on Mercari in May 2025. Around October, the left ear stopped charging and was no longer recognized by the app. Therefore, the right ear and case function normally, but the left ear is unusable, so it is being sold as a "defective item." The included box and USB Type-C cable are also included. Lightweight at 6g, comfortable to wear for extended periods without blocking the ear, LDAC compatible, and high-quality sound design. Up to 10 hours of playback, 40 hours with the case. Features multi-point connectivity, Google Fast Pair, and a game mode, making it suitable for commuting, school, and workouts. The ear cuff design is known for its low sound leakage and stable fit, making it difficult to fall out. Please check the photos for detailed product condition. No issues with operation or charging (right ear and case).