SONY CD Walkman D-E666. Color: Dark BLUE [Product Features] ・Built-in G-Protection, so there will be no sound skipping or playback stopping even if you tap the body with your finger during CD playback. ＊G-Protection 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. [Included Items] (Everything is in the first photo) ① D-E666 Body 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 ＊G-PROTECTION = 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 skipping from Track 1 to the last track occur without delay? ➂ Do all the switches on the main unit function properly? ④ Does sound skipping occur when lightly tapped 5 times in a row during playback? [Continuous Playback Time Confirmation] Confirmed continuous playback time = 49.5 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 (volume set to 1/3 of the maximum value) [Appearance] Top of the main unit: No noticeable scratches or dirt, it is clean. Bottom of the main unit: No noticeable scratches or dirt. Sides of the main unit: No noticeable scratches or dirt. Accessories: No noticeable scratches or dirt.