Feature: 1. PREMIUM MATERIALS: Portable bottle warmer is made of faux leather, hardware, silicone material, no irritating odor, even heat preservation, comfortable touch, can be used without worry. 2. ADJUSTABLE TEMPERATURE: The bottle warmer bag has intelligent 21 gears temperature (40‑60℃) adjustment, precise temperature control, can be adjusted to the right temperature at will. 3. LARGE CAPACITY BATTERY: This bottle warmer bag has 6400mAh large capacity battery, endurance of 3‑8 hours, the higher the temperature, the greater the power consumption, fully charged in about 2 hours, can not be used when charging. 4. LIGHTWEIGHT AND PORTABLE: Milk warmer bag is small in size and light in weight, easy to carry. Whether you are breastfeeding at night or going out, it can reduce mom's stress. 5. WIDE APPLICATION: Suitable for most bottles, can hold soy milk, drinks, coffee, water, milk, so you can have a hot drink anytime, anywhere when you are hiking, shopping, traveling. 6. GIFT OPTION: Travel bottle warmer can be used as a gift to share with friends, coworkers, relatives, family members who have newborns, so that your newborn can drink milk at the right temperature. Specification: Item Type: Portable Bottle Warmer Material: Faux Leather, Hardware, Silicone Size: Approx. 10 x 12cm / 3.9 x 4.7in Temperature Gears: 21 Gears (40-60℃) Suitable for Bottles Diameter: ≤ 80mm/3.15in, Including Most of Milk Bottles Battery: Polymer Battery 6400mAh (Included) Gross Weight: Approx. 285g/10.0oz. Package List: 1 x Portable Bottle Warmer1 x USB Cable 1 x User Manual 1 x Lanyard Note: Manual measurement, please allow some errors.