Precise and fast heat: Portable milk bottle warmer adopts an imported temperature sensor chip for precise heating. When using a 5V 2A adapter, it takes approximately 20 minutes to heat 150ml of water from 30°C to 40°C. Temperature adjustment: This bottle warmer features an LCD screen that allows real-time temperature monitoring. Temperature can be adjusted between 38°C and 55°C. USB port: Designed with a USB port, this bottle heater is compatible with various power sources, offering a lightweight and safe solution. Wide usage: Suitable for multiple occasions including travel, car trips, and airplane use, providing added convenience. Reliable materials: Made from high-quality waterproof fiber cloth and a composite heating pad, the portable bottle warmer is durable and easy to clean with a damp cloth. Do not submerge in water. Heating components are built-in. Item type: USB baby bottle warmer Material: Waterproof fiber cloth, composite heating pad Model: 001 Input power: 5V 2A Bottle diameter: Approx. 8 cm (3.1 in) Size: Approx. 8 x 14 cm (3.1 x 5.5 in) Heating method: Uniform surrounding heat Shape: Straight Package includes: 1 x USB baby bottle warmer, 1 x USB data cable