SONY CD Walkman D-E500. Color: Silver [Product Features] ・Built-in ESP, so there will be no sound skipping or playback stopping even if you tap the body with your finger during CD playback. ＊ESP explanation: Audio data from the CD is stored in semiconductor memory for several tens of seconds in advance. This is a technology that sequentially outputs the audio data stored in this memory to a D/A converter and outputs it via an HP amplifier. [Contents of the listing] (Everything is in the first photo) ① D-E500 main unit ② Stereo earphones (made by another company/new) ➂ AA alkaline batteries (new) x 2 ④ Instruction manual [Operation check] *Checked with 2 AA alkaline batteries installed ＊ESP = ON setting Played a music CD with few scratches on the signal surface (17 songs, approx. 72 minutes) and checked the following items. As a result, everything is working normally. ① Does it play without sound skipping during normal operation? ② Does the skip between Track 1 and the last Track occur without any delay? ➂ Do all the SWs on the main unit function properly? ④ Does sound skipping occur when lightly tapped 5 times in a row during playback? [Continuous playback time check] Under the following conditions, the continuous playback time = 19.5 hours was confirmed. ① Installed 2 new AA alkaline batteries ② Attached the included remote control and stereo earphones ➂ Played a commercially available CD with approximately 72 minutes of music in all-song repeat MODE (ESP ON setting/volume set to 1/3 of the maximum value) [Appearance] Top of the main unit: There are no noticeable scratches or stains, but there are shallow scratches that can be seen when held up to the light. (See the yellow frame in the 14th photo) Bottom of the main unit: There are fine scratches on the right side. (See the yellow frame in the 15th photo) Side of the main unit: There are no noticeable scratches or stains. Accessories: There are no noticeable scratches or stains.