1、Applicable Bottle Size: Baby bottle shaker features a flexible silicone insert slot, making it compatible with bottles of various sizes ranging from 53‑72mm in diameter. 2、Versatile: Baby bottle shaker can evenly mix various coffee, milk, and powder drinks to perfection, ensuring a smooth blending experience every time. 3、Intelligent Milk Shaking: Utilizing smart shaking technology, baby bottle shaker creates a silky smooth milk liquid without lumps, facilitating easy absorption for babies. 4、USB Rechargeable: Baby bottle mixer support multiple charging options, including power outlet, portable power bank, and USB, ensuring convenient power supply wherever you go. 5、Travel Friendly Design: Baby bottle shaker is compact and lightweight, ideal for packing in luggage during camping, apartment living, dormitory, mobile homes, and travel. Item Type: Baby Bottle Shaker Material: ABS Battery: 1200mAh Lithium Battery (Included) Single Working Time: 90 seconds Weight: Approx. 310.00g / 10.93oz 1 x Baby Bottle Shaker 1 x USB Cable 1 x Instruction Manual