... be lubrication ,full of elasticity just like a child.Ultrasonic cleaner also available to exchange alcohol,make it aroma , stir ... all the problems.5.Clock and watch , precision instrument: Have ultrasonic cleaner ,you shouldnt Dismount screw , gear wheel , hairspring spring , ... ,thats the New generation good present to give . Cleaner/ Jewelry cleaner/mini cleaner/Household Ultrasonic cleaner(GT-800)