Efficient Defogging: clear viewing and photography with our Angeleyes Defogging Heater Strap, designed to prevent condensation and fogging on camera lenses and astronomical telescope guide mirrors. Universal Compatibility: This versatile heating belt fits a variety of equipment, making it a must-have for both amateur and professional astronomers and photographers. Easy to Use: Simply wrap the adjustable strap around your lens or mirror, secure it, and power it up for instant defogging action. and Safe: Built with high-quality materials, the heater strap is both and safe to use, ensuring long-lasting performance under various environmental conditions. Heating Length:200mm Suitable for main mirror/shade diameter: 65mm Suitable for main mirror (for reference only): 50mm guide mirror, mini guide mirror, finder mirror, 1.25inch eyepiece Power supply: 12v power supply Current input: 12v 2.5A Wire length: 1.5m Heating temperature setting: 35C-65C Timer setting: 1-12 hours Color: As Shown Material: Graphene Package Contents: 1 x Heater Strap Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.