1、[PU Material] Made from microfibre PU material, this bottle warmer cover is safe, odorless, and baby friendly, can be easily cleaned with a damp cloth. 2、[5 Temperature Settings] This portable bottle warmer offers 5 temperature settings at 38℃, 40℃, 42℃, 46℃, and 52℃, the temperature can be displayed on the LCD screen. (It is recommended to heat warm milk, as heating cold water or milk directly may take longer). 3、[USB Powered] Equipped with USB power interface, this milk heat keeper can be powered by power bank, charging plug, etc., portable and convenient. The USB cable is compatible with most 5V 2A mobile power source. 4、[Convenient Usage] Featuring hook and loop fastener, our baby bottle warmer is suitable for most baby bottle sizes and containers. Its compact size makes it easy to carry in your bag. 5、[Long Lasting Warmth] This bottle warmer can keep milk, beverages, water bottles, or coffee cups warm for up to 24 hours, lightweight and compact, ideal for hiking, shopping, travel. Item Type: Portable Bottle Warmer Material: PU Height: Approx. 12cm / 4.72in Features: 1. Detachable handle strap, simple design 2. Premium PU material, delicate hand feel 3. Hook and loop fastener design for adjusting to different bottle sizes 4. Water proof material, easy to clean 5. Digital temperature display, smart temperature display system for monitoring milk temperature at any time 6. TYPE C data cable, USB power interface for continuous power supply, supports multi scene power supply, convenient for travel 1 x Portable Bottle Warmer 1 x USB Cable 1 x User Manual