①. Smart heating pad for travel: The portable thermostatic pad gives you flexible heat anywhere. With three adjustable speeds, it adapts to your individual needs. ②. Automatic shut - off for safety: These heating pads have an automatic shut - off function that not only saves energy but also ensures your safety. The device will automatically turn off after a certain amount of time. ③. Universal USB power supply: With the USB power supply option, the heating pad is extremely versatile and can be powered by a variety of sources, such as power banks, laptops or USB adapters. ④. Effective heating and thermal insulation function: This smart heating pad not only provides comfortable warmth, but also has effective thermal insulation to maintain a constant temperature and keep your drink warm. ⑤. Practical and portable design: The thermostatic pad was designed with portability and ease of use in mind. Take it with you to the office, on trips or use it at home for warm drinks whenever you want.