Usb Portable Heating Constant Temperature Milk Bottle Thermal Insulation Constant Temperature Sleeve explain: [USB bottle heater] the baby milk heating tube is equipped with USB cable. Simply connect the cable to any mobile power supply, vehicle USB, laptop interface, charging adapter, etc. to power the baby bottle heater. This is the perfect solution for parents to heat baby bottles conveniently, safely and conveniently during car travel. Let your baby drink hot milk at home, outdoors or on the road [portable baby bottle heater] small and compact design, easy to carry and store. The baby bottle heater is designed with a hand strap. You can hang the milk heater on the diaper bag, harness or stroller armrest. USB baby bottle thermostat makes night feeding easier. Compared with traditional milk powder, babies can't wait and their parents can't sleep enough. This milk heater needs to press the switch to solve the drinking problem at night [intelligent constant temperature] the heating bag of this bottle is made of durable material, which is safe and heat insulated. Babies can drink milk while heating. 42 C circulating constant temperature heating can effectively maintain the nutrition of milk. The baby bottle heater maintains a warm temperature to prevent it from getting cold. Best baby milk heater [fast heating] the portable milk heater adopts 5V, 2A adapter, which has the effect of thermal insulation or slow heating. When 9V and 10V on-board adapters are used and the output voltage exceeds 12V, the bottle temperature controller will rise rapidly. The green light is always on, which means that the milk heater is heated to 42 C and begins to keep warm [applicable to bottles of different sizes] the portable USB baby heater adopts ring design and can be adjusted to adapt to different types of bottles. The stroller milk heater can be used with plastic bottles and glass bottles. The baby breast milk heater has slip strips inside to help hold the bottle in place to ensure that the bottle does not fall or slip out during driving. Size: 8CM X9.5CM contain: 1X thermostat