Note: Continuous playback time was tested after playback, with the hold switch locked and the LCD in sleep mode, and no further operation. This was done to confirm the average performance of the purchased battery group, eliminating human operation. This is not based on actual usage. In reality, operations such as operation, song changes, and volume adjustments consume power each time the LCD is used, so the playback time will be considerably shorter. In that case, setting the LCD brightness to minimum seems to extend the playback time. Note: All units are initialized in iTunes, songs are loaded, operation is confirmed, and only normal units are finally initialized and shipped. There is no audio noise. Used, working product. This listing is for the main unit only. Battery replaced with a new one (2025/12/1) LCD not replaced. Displays normally. The exterior has some scratches. Arrows indicate noticeable areas. Please review the photos carefully before purchasing. We also request that those who understand used products purchase. Charging, PC-related operations, music playback operations, click wheel, hold switch, FM, video camera, pedometer, voice memo, and sound from the built-in speaker have been checked and are normal. There is no noise caused by the main unit. Continuous playback time confirmed up to 31.35 (second time) hours. Test conditions: Fully charged (plug icon appears on the battery mark) Volume at the center position Airphones used were the ones that came with the iPod (90cm long) After playback, the hold switch was locked and left unattended Playback was checked occasionally until the estimated end time. Testing is performed to check the battery condition and the quality of the repair work. Please understand that this is not to guarantee the time. Please contact us within 2 days of arrival for initial defects. We will respond to issues other than the exterior. Water-damaged items and those with signs of disassembly are not covered. Thank you for your understanding.