Description: Features: 100% brand new and high quality. 1. Helps you to keep your tea milk and coffe warm in the winter. 2. Silicone non-slip, durable, elegant appearance. 3. A perfect presents to you lover, friends and family. 4. USB connector convenient and safe. Attention: 1. Connect the USB cable to the computer or 5V charger switch interface, coasters begin to generate heat. 2. Please don't use the recessed bottom cup, glass Cup is best. 3. Do not use cups that are too thick at the bottom, or these cup that heat-resistant less than 70 degrees celsius. 4. Please do not use this insulation Cup for outside functions. 5. Please unplug the USB cable when don't use, to extend the life of the product. 6. It is only used to keep your tea or coffe warm,but not for heating. Specifications: Item Type: Cup Pad Material: Silicone, Carbon Fiber, Metal Color: The Same As the Picture (Optional) Diameter: 9cm/3.54in (Approx.) Cable Length: 110cm/43.31in (Approx.) Connector: USB Voltage: DC 5V Current: 750MA Power: 3.75W Quantity: 1 Pc (other accessories demo in the picture is not included) Note: 1.Transition: 1cm=10mm=0.39inch 2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 X 5V USB Warmer Silicone Cup Mat (No retail package)