1.The cup warmer mainly keep your coffee, water, milk, tea, and other beverages at the perfect temperature for a long time, wherever and whenever, you can enjoy your favorite drinks at the perfect not-too-hot temperature.[Use Suitable Mug] -Use a thin-walled, flat-bottomed mug will have the best warmth retaining performance[Best Gift Choice] -Beautiful and design, keep your beverages always warm, It will be your best gift choice to show your care to your families, lover or on 's day, Thanksgiving, Christmas or other occasions to show your cares.3 gear of temperature adjustment.Suitable for school, dormitory and office, easy to use the cup cushion.[Attention]1. we 't recommend use concave and thick bottom cup, the heating will be slow and bad heating 2. This is the cup warmer only, not the electric , it can not boil the water, it mainly the cooling speed of hot water, keep the hot water warm the whole day.3. If you to heat the cool water, you may have to wait for 30-50 minutes, or even , the max temperature will be 50-60, the you wait, the closer you will to 60. The heating speed depends on the thickness of cup bottom and water capacity4. The product doesn't include the adpater, use your phone adapter or other USB sockets, and make the adapter output power 2A, or it can not enough power and the heating will be slow and weak.Power: 20WModel Number: Coffee Mug Cup Warmer USB for Tea Milk WaterUse: USB Coffee Cup Warm HeatingType: USB Heating CoasterFeature1: Heating CoasterFeature 2: Warm Heating PadFeature 3:Timing Heater Coaster for Milk TeaApplication: Household /Office /Living Roomcolor:PinkMaterial:ABSPackage Contents:1 x USB Heating CoasterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm. Power supply: USB plug-in Cable length: 0.9 meters Rated power: 20W Input: 5V/2A Product size: diameter 11.2cm Product thickness: about 2.4cm Product color: pink/green/white"