Feature: 1. This baby bottle warmer and heater warms quickly and evenly, it can stretch to fit most baby feeding bottles, it is easy and safe to use. 2. Fully compatible with a variety of power supplies, the power cord is a USB interface, compatible with most 5V2A mobile power, most 5V2A charging head, most 5V2A car chargers (power must be more than 1.5A to drive the heating film, it is recommended to match 2A charging head Or charging treasure). Speciation: Material: Crystal velvet Applicable charging head specifications: Input voltage: 100-240V AC: 50/60Hz Input current: 0.35A Output voltage: 5V Output current: 2A Color:Blue / Pink / Yellow (Optional) Size: 30 x 14 cm / 11.81 x 5.51 inch (appr.) Cable Length: 94 cm / 37.01 inch (appr.) Package included: 1 x Bottle Heated Cover Notes: 1. The heating and heat preservation effect is affected by the thickness of the bottle, the material, and the original temperature of the milk inside. After plugging in, the bottle will be heated first, and it will be changed to 37-42 degrees. If it is from the thickness of the normal bottle is taken out in the refrigerator, the heating will take about one and a half hours. The glass material will heat up a little faster than the plastic bottle. If it is at room temperature, it takes about half an hour to heat up. If the bottle is large, The heating time will be more, the pp's ice milk will get 42 degrees in 1:30 hours, and the glass material will take 1 hour to heat up. 2. Please use a power supply with 5v 2a input.