The machine generates a strong vibration, which intensifies the effectiveness of the Lindner Coin Cleaner. The coins are cleaned gently but thoroughly. Can also be used to clean jewelry and watches. Two speed settings. Runs on two batteries (included) so it can be operated anywhere, anytime. Includes two removable baskets for small items. Operate only with Lindner Coin Cleaner. Do not use with Lindner metal dips.