Released in 1996 as one of the slim all metal Walkman models, improved battery life over previous generation counterpart, nice large tape door window, competitive price, can be fully used without the remote, manual controls on the main unit. Dolby B noise reduction. 9 hours continuous playback with the originally included 600 mAh rechargeable battery. Body dimensions (WxHxD): approx. 108 × 78 × 21 mm. 2 x 5 mW power output, can drive large headphones with ease. High frequency response interval (for a Walkman) -> 30 – 18k Hz. Automatic tape type selection. Equipped with EX DBB with two steps. The unit is refurbished meaning complete disassembly, deep cleaning of all components and chassis. New oil for all plastic to metal & metal to metal friction points (capstans, gears, motor). New rubber belt fitted. Deep clean, soak in rubber conditioner fluid for 24 hours (change was not required). Exhaustive clean of all the belt grooves / guidance to reduce flutter to a minimum. Cleaning of the potentiometers and switches (including remote) with contact cleaner. Treating the remote & headphones cord with rubber / plastic conditioner to regain flexibility and shine. Tape path checked with SONY MC-112C mirror cassette. Speed checked and adjusted TEAC test tape MTT-211NA. Demagnetized with SONY HE-5. Perfect functioning order, near mint aspect. Tested several hours with various tape types and brands, working great. Availability to upgrade the included HP set on the remote with a 3,5 mm jack mother one giving the. To use any modern headphones of choice – volume control on the remote will be lost, must be set on maximum for sound to work properly, contact me for details and price. MDE-EW21E with integrated headphones (lost if the upgrade is chosen). One new rechargeable battery 1350 mAh. New USB charging unit (universal), can be used at home / car / travel with any USB 5V power adapter (500 & 1000 mA selectable – 500 recommended for the prismatic 7 / 5F6 batteries), auto cut-off when fully charged, all set of protections (reverse polarity / temperature / overcharge / short circuit). Carrying / storage pouch. If an AA battery caddy is really needed / necessary please contact me for price. It runs perfectly and looks almost perfectly, very good sound. Thanks for your interest!