: The Intelligent bracelet hand warmer is a must-have for winter! With a double-sided heating system, it warms hands in seconds. Adjust the temperature as you like, based on the length of your palm or wrist. It's rechargeable and easy to use! Specification: Size: about 80 73 33mm 3.15x2.87x1.3in Power: 5W mode: button Temperature Adjustment: four-speed adjustment (40?, 45?, 50?, 55?) Product : Silicone PP Charging time: 3-4 hours Use time: 3-6 hours Battery Capacity: 000mah Individual weight: 120g Packing List: Hand warmer 1 USB cable 1 Notes: 1. Due to the effect of monitor and light, the actual color of the item may be slightly different from the color shown in the picture. 2. Due to manual measurement, the measurement value is slightly deviated, please understand.?Versatile Fit: These hand warmers are suitable for all ages according to the length of the palm or wrist. They come with an adjustable strap and a magnetic strap that can be easily adjusted to fit your hands comfortably and securely. ?Advanced Heating Technology: Achieve ultimate comfort with our rechargeable hand warmers that feature double-sided heating for efficient heat distribution. The soft silicone and synthetic PI thermostatic heating piece ensures maximum comfort to make your hands feel like a hot compress. ?Stylish and Cool: Looking for a fashionable way to keep your hands warm? Try our rechargeable hand warmers! It's a alternative to old hand warmers. The sleek bracelet design lets you free your hands to do other tasks, like playing on your phone. ?Effortless Temperature Management: Streamline your hand warming experience with our rechargeable hand warmers. The LCD screen display provides clear and intuitive temperature monitoring while the 4 temperature adjustment options provide precise control and maximum warmth. ?Better Warmth: Equipped with an intelligent bracelet, our rechargeable hand warmers bring optimal warmth. Experience fast heat-up and 360 surround warmth like never before!.