Features: brand new and high quality 37-55 6-step temperature selection, with temperature display function, suitable for bottles with diameter less than 7.2cm, and can be used while chargings.(Bottle is not included.) Close to the bottle body, better thermostatic effect, suitable for more shape bottles. When the temperature reaches 42, the temperature will automatically enter the heat preservation modes, and support 24 hours of continuous heat preservation. Chargings is very convenient, you can use powerbanks, car, adapter to charge. Our bottle heater is low-voltage design, automatic overheating protections, input 5V 2A, enhance security. Breast milk heater is suitable for many occasions. It can be used as a baby bottle heater for travel, trains and car, making life more convenient, and we don't need to worry about babies drinking milk Specifications: Material:Plastic Color:Green Battery capacity:6000mAh Power:18W Chargings time: 6hours Usage time: 3hours Size:Approx.137x85x58mm/5.39x3.34x2.28inches Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 Set Bottle Warmer