Forpro expert nail gel and lacquer shaker is ideal for mixing soak-off gel nail polish that has become too thick and nail lacquer that has separated. Operates at 5600 shakes per minute. Only need to shake bottle for 10-15 seconds. For use with all bottles up to .75 oz. Comes with three detachable straps, ac 120v adapter. Also uses 4 "aa" batteries (not included).