Intelligent temperature control: Use 9v/10v/12v adapter to achieve rapid heating, reach high temperature within 10-15 minutes, and then maintain a constant temperature. Multi-layer security texture, lock the temperature, keep warm for a long time. Various uses: specially designed for travel and breastfeeding. If you don't need to feed your baby in a hurry, you can choose a 5v/2A adapter, which is suitable for keeping warm or slowly warming up (about 30 minutes). Meet your different feeding needs. Reliable and safe material: The milk heating bag is made of high-quality superfine fiber PU material, which is non-toxic and tasteless, and is baby-friendly. Its size is approximately 310 x 115 mm / 12.2 x 4.52 inches, which is suitable for most baby bottles, so don't worry about the size mismatch. USB cable charging: Baby breast warmer can be used for portable mobile power, charging plug, car USB interface (not including mobile power). Lightweight and portable, easy to carry outdoors. Please do not heat the empty bottle. Anti-skid and portable: using anti-skid silicone, it is not easy to fall off, suitable for a variety of materials, such as water cups, mineral water bottles, milk boxes, etc. Hang in a stroller or crib. Product description This warm milk bag is very suitable for feeding at home or out, freeing your hands. Specification: Material: Superfine fiber PU+heating film+USB cable Temperature range: 43-47 Rated power: 9v/10v/12v-2A (fast heating); 5v-2A (slow heating). Dimensions: 310 x 115 mm / 12.2 x 4.52 inches (Excluding mobile power) Work status indication: 1. 5v slow heating: the white light flashes slowly, continue to heat slowly to 45, and the green light starts to keep warm. 2. 9v/10v/12v rapid heating: the green light flashes slowly. After continuous and rapid heating to 45C, the green light is always on, and the heat preservation effect is turned on. 3. High temperature warning: When the temperature exceeds 50C, the green light flashes quickly. Please use a suitable power bank to obtain the required heating effect. During the heating process, the surface temperature of the insulation bag will rise faster than the temperature of the bottle being heated, which is normal. Please be patient and allow enough time to heat up. Reminder: 1. Please do not heat the empty bottle. When heating, it is recommended to ensure that there is more than 60ml of water or beverage in the bottle. 2. The insulating sleeve cannot be soaked in water for cleaning. In the case of ensuring that the product is not charged, it should be wiped clean. 3. Do not wash with water or washing machine. If you need to clean it, wipe it with a soft cloth and water. After cleaning, make sure it is completely dry before connecting it to the power source. 4. The insulation bag contains electronic chips and heating circuits. Do not tear to avoid damage to the circuit.