【Manufacturer】Omni Corporation 【Model Number】YMO-103 【Product Name】Facial Lift Atonce α 【Set Contents】Main unit, mouth cover, beginner's mouth cover 【Batteries Required】Two AAA batteries I purchased this and only tested it once. It has been stored at home ever since, and I forgot about it. The instruction manual is missing. Operation has been confirmed. The batteries have been removed. *Please refrain from purchasing if you are concerned about home storage. Please understand and agree to no returns or no claims.