Works Good but fast forward needs work. This vintage Sankyo ST-40 cassette tape recorder is an exceptional piece of portable audio equipment from Japan. It has been carefully maintained and is in excellent working condition. The device is perfect for those who love listening to cassette tapes on the go or those who collect vintage audio equipment. The recorder has an AC/DC power source, making it versatile and easy to use in any location. It is a rare find and a great addition to any audio collection.