Connection type- electric Compatible Bottle Size: 5.5cm. Material- ABS Voltage- 110V - 220V. The diameter of a suitable bottle is 5.5 cm. Normal bottles are suitable. Note that wide mouth bottles are not suitable. Voltage: 220V. Power: 15W. Single warmer weight 299.2g. Precautions- Please be sure to place the product away from young children, so as to avoid burns during use. Note that food placed in the bottle warmer for a long time can easily cause food spoilage. When cleaning, do not invade the body clear water. Features- The use of advanced and efficient heating technology, rapid temperature, precise temperature, automatic adjustment. Suitable for heating different types of bottles, baby foods, such as: milk, porridge, rice cereal and so on. The heating temperature is generally controlled within the range of 35°C to 45°C. Easy to carry, easy to clean, non-toxic plastic shell, so you and your baby feel at ease.