AUTENS Portable Bottle Warmer has 4 heating temperature options (98°F , 104 °F , 113 °F , 122 °F) Safely and quickly heats milk in just 3-5 minutes. Slow heating technology gently preserves the nutrients in breast milk and formula. Includes 2 adapters for most bottles. USB interface allows you to charge it anywhere. Ideal for placement at home, in the car and while traveling.