Detailed Product Description 9W U-tube, use 4×"D" battery (not included).YY103S.............................YY103P9W U-tube, use 4×"D" battery (not included) with car plug.YY103A7W U-tube, sealed acid battery, rechargeable transformer, car plug and rechargeable seat.YY103A-17W U-tube, sealed acid battery, rechargeable transformer and car plug.YY103R9W U-tube, use 4×"D" battery (not included), ...