Feature: 1. Automatic Mixer: This electric shaker is designed for mixing infant formula and mother milk, making it more evenly mixed and allowing the formula to fully dissolve in water, saving time and trouble from manual mixing 2. Versatile Use: This baby bottle shaker has 4 mixing modes and 4 speeds adjustment to meet different needs; Automatic mixing design effectively reduces foam, avoids digestion problems, and is secure and practical 3. Battery and Timing: This baby formula mixer has a built in 1500mAh rechargeable battery that lasts up to ten days after charging; Support 60s, 120s, 180s, 240s, and 300s timing to meet more usage needs 4. Small Night Lamp: This electric milk mixer features a night lamp function, providing soft and non glaring light, making it convenient for you to prepare milk for your baby at night, which is secure and convenient 5. Applicable Range: In addition to mixing infant formula, this automatic bottle shaker is also suitable for mixing other drinks such as coffee, fruit drinks, tea, etc; Compatible with bottles with diameters ranging from 50 to 75mm 6. Low Noise and Security: The portable bottle shaker is made of ABS material, which is secure and lasting; The sound during mixing is less than 40dB, so it will not affect others and is very suitable for family use Specification: Item Type: Electric Milk Shaker Battery: Li Battery 1500mAh (built in) Speed Gear: 4 Gears Timing: 60s, 120s, 180s, 240s, 300s Material: ABS, Silicone Size: Approx. 135 x 153mm / 5.3 x 6in Weight: Approx. 600g / 21.2oz. Package List: 1 x Electric Milk Shaker 1 x USB Cable 1 x User Manual