Note: Continuous playback time was tested after playback by locking the hold switch and putting the LCD to sleep, and then leaving it untouched. This was done to eliminate human operation and confirm the average performance of the purchased battery group. This is not based on actual usage. In reality, the playback time will be considerably shorter due to power consumption by the LCD for various operations such as operation, song changes, and volume control. In that case, it seems that the playback time will be longer if the LCD brightness is set to minimum. 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 caused by the main unit. Used, working product. Main unit only. Battery replaced with a new one (2025/12/17) LCD not replaced. Displays normally. The exterior has many scratches. Please take a close look at the photos before purchasing. Also, we hope that those who understand used products will 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. Continuous playback time confirmed up to 36 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 untouched. Playback was checked occasionally until the estimated end time. This test is 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 anything other than the exterior. Water-damaged items and items with signs of disassembly are not covered. Thank you for your understanding.