The bottle shaker will shakes the milk powder evenly, not easy to produce bubbles and agglomeration of milk powder, which makes the milk more delicate Built-in 1200mAh large capacity and can be recharged by USB power, which makes it easy to carry and use it One-key control, 3 gears adjustable, easy to use. lightweight, easy to carry around Low noise working, will not disturb baby sleep The milk shaker is suitable for milk bottles with a maximum bottom diameter of 50mm-82mm, and 99% of milk bottles are available Suitable for common milk bottles on the market (such as Hegen, Pigeon (3rd generation), Como Tomo, Thyseed, Nuk, Dr. Brown, Adley IVORY, etc.) Different materials (silicone, plastic) and shapes (circular, square, triangular) are also applicable Bottle with handle, handle height needs to be higher than 7cm, also suitable for glass bottles Specifications: Minimum usable bottle diameter: 50mm Maximum usable bottle diameter: 82mm Working time: First gear (1 minute), Second gear (2 minutes), Third gear (5 minutes)