Features: High-purity coppers cores wire, low resistance, has good conductivity and stable performance. The control button is made of silicone, which is waterproof and washable. Easy to operate, just press the button. 3 Gears adjustment: red/blue/green-colors indicator lights represent different gears respectively. Type-C interface is adopted. The massage and heating functions can be controlled separately. Suitable for heating gloves, scarves, clothes and cushion. Specifications: Material: Silicone Size: Approx. 3.5x3.5cm/1.38x1.38inch Package Includes: 1x Silicone Push Button Switch note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.