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 while playing a CD. ＊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 (17 songs, approx. 72 minutes) with few scratches on the signal surface and confirmed the following items. As a result, everything is working normally. ① Does it play without sound skipping during normal operation? ② Does skip between Track 1 and the last Track occur without delay? ➂ Do all the SWs on the main unit function properly? ④ Does sound skipping occur when tapped lightly 5 times in a row during playback? [Continuous playback time check] Confirmed continuous playback time = 19.5 hours under the following conditions. 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: ① There is a stain to the left of the PLAY button. (See the yellow frame in the 9th photo) ② There are scratches under the CD WALKMAN logo. (See the yellow frame in the 10th photo) ➂ There is uneven paint that is visible when held up to the light. Bottom of the main unit: No noticeable scratches or stains. Side of the main unit: No noticeable scratches or stains. Accessories: No noticeable scratches or stains.