Features: High-Quality Material: Made of high-quality materials, it's not easily damaged, durable, and long-lasting. Long-Handled Sponge Cup Brush: Easily clean water cups, teacups, and other deep-cup vessels. The sponge brush head is easy to clean and won't scratch the inner walls of containers. Portable Bottle Warmer: Convenient and compact design makes it easy to carry while hiking, shopping, or traveling. Heat Preservation Function: Your child can enjoy warm milk anytime. It features 7 adjustable temperature levels, maintaining a constant temperature and providing easy operation. Convenient USB Charging: USB powered, it can be connected to a power bank, charging adapter, car USB, etc., for convenient and quick charging. Note: 1. Actual color may slightly differ from the image due to lighting effects. 2. Please allow 1-3cm deviation due to manual measurement. Bottle Warmer Cover Material: PU, polyester fiber, PET, alloy heating film Size: Diameter 50-80mm * 120mm Rated Voltage: 5V Rated Current: 2A Rated Power: 10W Suitable Bottle Diameter: 50mm-80mm Sponge Cup Brush Material: Plastic handle, sponge head Size: Total length: approx. 23cm, sponge head length: approx. 9cm, width: approx. 5cm Instructions: 1. Place the baby bottle in the thermal cover, adjust the sticker according to the bottle's diameter, and connect the power supply. 2. After connecting to the power supply, the power indicator lights up, indicating a normal connection, and the default temperature is 35 degrees. 3. Press and hold the button to start temperature adjustment. There are 7 levels available for adjustment: 35°C, 40°C, 45°C, 50°C, 55°C, 60°C, 65°C. 4. After selecting the gear, the display jumps to the current temperature and starts working. 5. After reaching the preset temperature, the display shows the preset temperature and enters the heat preservation mode. Friendly Tips: 1. When the temperature is lower than the set temperature, it is in heating mode, and the display changes the value according to the current temperature. 2. When the temperature reaches the set temperature, the heating stops, and it enters the heat preservation mode, and the display shows the set heat preservation temperature. 3. When the temperature is higher than the set temperature, the display shows the real-time monitored temperature. 4. It is recommended to use this product in an environment of 0°C-40°C. The lower the ambient temperature, the longer the heating time. 5. Low-temperature heating is limited by power and cannot be achieved in the current mode. 6. It takes about 20-30 minutes to heat 200ml of water from 25°C to 45°C. 7. The heating time is long, so it is recommended to heat it in advance or use it to keep warm. 8. The minimum diameter of the baby bottle must not be less than 50mm, and the maximum diameter must not be greater than 80mm. Package List: 1 x Bottle Warmer Cover 1 x Sponge Cup Brush