Feature: 1. Enhanced Temperature Control for Accuracy Warmth: The spring temperature control head provides a more snug and accurate temperature measurement, ensuring worry free constant temperature heating for milk, with precise and reliable results. 2. Powerful Dual 3000mAh Battery: Utilizing two high capacity power batteries in parallel, this milk warmer delivers steady and long lasting heat, allowing for sustained and consistent temperature control for extended periods. 3. Adjustable Hook and Loop for Versatile Compatibility: The adjustable strap provides flexibility to accommodate different bottle diameters and bottle shapes, making it compatible with a wide range of bottles. 4. Car Power Supply 5V 2A: Designed for various environments such as car journeys, this wireless milk warmer conveniently powers up by plugging into a car charger. Its compact and sleek design makes it an elegant addition to your journey. 5. Compatibility with Various Bottle Shapes: Suitable for adapting to different bottle shapes, with a diameter of ≤6.5cm, this wireless milk warmer offers convenience and ease of use for a variety of bottles. 6. Adjustable 6 Temperature Settings: With six temperature settings ranging from 37°C to 55°C, you can customize the perfect temperature for your baby's milk, ensuring it is always at the ideal temperature for consumption. Specification: Item Type: USB Milk Water Warmer Weight: 302g/10.65oz Product Material: ABS Battery Type: polymer lithium battery Battery Capacity: 6000mAH (shipped with built in battery) Temperature Range: 6 temperature options, 37℃, 40°C, 42℃, 45℃, 50℃, 55℃ Charging Method: USB Heat and Hold: 2-3 hours Heating Speed: 30 minutes Charging Time: 6 hours . Package List: 1 x Milk Warmer 1 x Instructions 1 x Data Cable