This is an early yellow BowLingual. I used it for the dog at my parents' house and have kept it stored away. Due to storage at home, the outer box and the plastic inside are dirty and deteriorated. I have confirmed that it works with batteries. Although there is no instruction manual, you can download one by searching for "BowLingual". If you don't need the outer box and batteries, I can lower the price by about 500 yen. ●【Manufacturer】TAKARA ●【Batteries】Main unit: AA batteries x 2, Transmitter microphone: AAA battery x 1 ●【LCD screen】100 x 64 dot matrix monochrome LCD display ●【Memory】16Mbit ●【Size】Main unit W74 x H107 x D32mm Transmitter microphone W82 x H37 x D25mm ●【Weight】Main unit: approx. 110g Transmitter microphone: approx. 36g