Description: Glass-ceramics have better heat transfer efficiency and electrical energy conversion rate than ordinary glass and metal. The USB interface provides safe power supply and can be connected to mobile power supplies and laptops which is convenient for outdoor use. Made of ABS and glass it is safe and durable. The length of this product is 13.2cm the width is 11.8cm and the height is 2cm. It is suitable for ceramic glass metal etc. Item Name: Mug Warmer Material: Glass ABS Rated Power: 10W Power Mode: USB Features: Power Failure Protection Widely Use Convenient Size Details: 13.2cm x 11.8cm x 2cm/5.2 x 4.65 x 0.79 (Approx.) Notes: Due to the light and screen setting difference the item s color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Mug Warmer (Others Not Included) 1 x USB Cable