The moisture meter can quickly measure the moisture content of the grain. 1. Premium material: made of premium quality ABS and PU, the milk bottle thermal bag is durable, reliable, praktyczna and has a long service life. 2. Usage: Pour cold water into the milk bottle, then put the milk bottle into the milk heater, then use the milk bottle warmer to charge the USB. 3. Preserve: when heated to 42 degrees Celsius, a constant temperature lights up and stays at that temperature. With accurate temperature control and real-time monitoring, the thermal bottle is made of many heat protection materials, saves energy and is durable. 4. Hook and loop: With hook and loop, the baby bottle heating bag can be adjusted, more suitable for different bottle diameters and bottle types. 5. Multi-layer: spring temperature control head can accurately measure temperature, thermal bag for rechargeable water bottle can keep milk and water at about 42 degrees celsius. Specification: Item Type: Milk Bottle Thermal Bag Material: ABS, PU Weight: 293 g/10,34 oz Color: as shown Voltage: 7,4 V Current: 2A Power: 18W Battery: 6000mah lithium polymer battery (included) Range: 37 degrees Celsius, 40 degrees Celsius, 42 degrees Celsius, 45 degrees Celsius, 50 degrees Celsius, 55 degrees Celsius List of packages: 1 x Thermal Bag for Milk Bottle 1 x use instructions 1 x USB power cable Note: Make sure that the bottom of the bottle is tightly attached to the temperature controller head with a spring on the base, otherwise the temperature controller will not be able to measure, which will cause too high a temperature. Before feeding, make sure the temperature is right. Long press the switch to start, short press to select gear.