Playback and sound output have been confirmed. The volume buttons, play/pause button, and up/down/left/right navigation buttons all respond normally, with no buttons that are difficult to press. I have only confirmed that button operation, charging, and music playback work correctly, and I have not performed a detailed operational check of all functions. Since it's from about 10 years ago, there may be unknown defects. Please be aware that I do not guarantee the operation of functions that I have not checked. This is a used item with signs of wear, so please refrain from purchasing if you are concerned about the condition. There are many scratches overall due to use, and there is quite a bit of dust and small debris in the gaps of the LCD screen. I have included many photos to make the condition clear, but if there are any points you cannot understand from the photos, please be sure to ask questions before purchasing to prevent any problems. The battery condition is not extremely worn, and is within a practical range. However, it's from about 10 years ago and the battery has never been replaced, so please assume there is some wear and tear. I think I actually used it for 1-2 years. I haven't used it for many years, and I'm listing it because it's useless to me. The item for sale is only the Walkman body shown in the photos. There are no accessories. I will initialize it and ship it after the purchase process is completed. It will be carefully packaged and shipped via Yu-Packet Post Mini. Walkman A Series NW-A10 Series NW-A17 (S) Silver Brand: SONY WALKMAN Capacity (GB): 64.0 GB Digital Audio Player Features: Hi-Res, Noise Canceling, FM Tuner, FM Complementary Broadcasting, External Memory Support Supported Formats: MP3, FLAC, AAC, ALAC, WAV, WMA, AIFF, ATRAC, HE-AAC, Linear PCM Color: Black Weight (g): 66.0 g Model Name: A Series A Series/Model Name: NW-A17 Audio Function: Hi-Res Network Function: Bluetooth