Features: 1. Save during diet, good heating effect, can be used in any milk bottle. 2. Make connecting telephone chargers, power libraries, computers, cars, etc. to heat milk bottles, and provide baby warm food anytime, anywhere. 3. Environmental protection, non -toxic materials, no fluorescent agents, care for babies. 4. Use 5V, 2A low -voltage and low current heating to maintain constant temperature and ensure heating safety. 5. Suitable for bottle of various materials. The high level is about 60 degrees Celsius, CLP is about 50 degrees Celsius, the low level is about 40 degrees Celsius, and the gear can be changed for 3 seconds. Specification: 100% brand new quality Item Name:USB Milk Water Warmer Insulation sleeve inner diameter: 55mm-75mm Heating piece material: Silicone alloy heating wire Bottle cover material: cloth Heating piece: voltage 5V, current 2V, temperature 50°C-60°C Type: magic tape style, zipper style Color:As the picture show Size:As the picture show(1inch = 2.54cm) 3rd gear adjustment temperature: Red light at around 65 degrees Celsius: high temperature for fast heating Blue light at around 55 degrees Celsius: medium temperature, used for medium speed heating Green light at around 45 degrees Celsius: low temperature, used for long-term insulation Package includes: 1* USB Milk Water Warmer Note: 1.Due to the different monitor and light effect, the actual color of the item might be slightly different from the color which is showed on the pictures. 2.Please forgive 1 cm/0.39"-3 cm/1.18" measuring deviation due to manual measurement.