1. Advanced Anti-Condensation Technology : Eliminate fog and moisture on your optics during cold weather observations. This dew heater maintains a slightly elevated temperature on your lens to prevent condensation, ensuring a clear and enjoyable viewing experience. 2. Versatile Compatibility : Designed to fit various optical devices including astronomical telescopes, camera lenses, bird watching mirrors, and guide mirrors. Available sizes include: - 53050 mm for 130 mm diameter lenses - 63050 mm for 160 mm diameter lenses - 83050 mm for 220 mm diameter lenses - 93050 mm for 225 mm diameter lenses - 1230 x 50 mm for 350 mm diameter lenses 3. Smart Temperature Control : Features intelligent temperature regulation for efficient and uniform heating. This system not only maintains optimal stargazing conditions but also extends the lifespan of the heating belt, providing long-lasting performance. 4. Convenient Power Supply : Easily powered by any standard 12V power source (not included) with a DC5521 plug type. Ideal for remote observation spots, ensuring that your optics stay clear for capturing stunning celestial images. Use Scenarios : - Perfect for astronomers observing on chilly nights, keeping telescopes and lenses free from fog for uninterrupted views. - A great companion for wildlife enthusiasts during early morning or late evening outings, allowing for sharp visuals without condensation. - Essential for photographers capturing night sky events, ensuring optimal clarity when shooting celestial bodies.