Features 1、Cold Resistant: Designed with low temperature wire, it can withstand temperatures as low as ‑30 degrees Celsius. It remains flexible even in extremely cold conditions, ensuring the durability and flexibility of the wires. 2、Anti Fog Lens: The anti fog lens strap helps remove fog generated on the lens, allowing for clear photos even in moist or cold environments. It is perfect for use in humid areas or snowy conditions. 3、Timer Switch: You can control the working time of the heating strap with a remote control. Simply press the power button for 3 seconds after turning it on, and when the indicator light flashes, it will work for 30 minutes. It can also function in a constant mode without automatic shutdown. 4、Quick Installation: The adjustable strap is soft and comes with custom elastic hook and loop tape, allowing for quick and secure attachment to lenses of different widths. It is compatible with lenses with a diameter of 80‑110mm. 5、USB Power Supply: It features a USB A interface for power supply, allowing you to use various power sources like power banks or portable chargers. The flat shaped wire is more flexible and convenient to bend, making it easier to store. Specification Item Type: Lens Heater Warmer Weight: 91g/3.2oz Material: Graphene Cotton Power Interface: USB A Heating Length: Approx. 29cm/11.4in (1-2cm error) Compatible Lens Diameter: 80-110mm Adjustable Gears: 3 speed Power Supply Voltage: 5V 2A Package List 1 x Heating Belt 1 x Storage Bag