PHILIPS (FOR COMPACT CAMCORDERS ONLY vhs-c (compact vhs tape) rewinder. Helps Prolong your Camcorder life. Rewinds tapes in two minutes. Auto Shut off. will only work with vhs-c tapes. NOT FOR 8MM. saves camcorder battery power and helps prolong camcorder life compact, light weight and durable. Operates on 4AA batteries (not included). AC/DC operation and Power adapter included convenient front see-thru panel. Starts to rewind when cover is closed. springs open when fully rewound. automatic power shut off.