Released in 1995 as the radio enabled version of the EX811, silent mechanism no solenoid employed to change modes, the motor briefly reverses rotation to change modes, nice large tape door window, competitive price, LCD remote with all functions except Dolby and direction modes. Chassis, plastic tape door to. Dolby B noise reduction. 5 hours continuous playback with the originally included 600 mAh rechargeable battery (7,5 Hours on radio). Body dimensions (WxHxD): approx. 108 × 77 × 21 mm. 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 provide a microplug to 3,5 mm jack mother adapter giving the. To use any modern headphones of choice, contact me for details and price. 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!