ATH-TWX9 Wireless Earphones with Noise Canceling The power turns on, but there is no sound from the left ear. The case and right ear have been confirmed to be working. - Model Name: ATH-TWX9 - Included: Charging case, manual - Color: Black - Battery Capacity: 300mAh - Output: 5V/1A - Features: Noise canceling, 360-degree audio Includes the main unit, charging case, box, cable, and ear tips. The sound quality of the right ear is not a problem. There are some areas where the paint on the case is slightly chipped. Please check the images for the appearance. Accessories include ear tips, a USB cable, and documents. Everything in the images is included. Please consider only if you are satisfied with everything. Returns are not accepted to prevent replacement.