Astronomical Telescope Lens Dew Heater Strap with Intelligent Temperature Control Anti-Condensation Warmer DC5521 Powered Polyester for Camera Lenses and Bird-Watching(1230 * 50mm)

Features:* Made of polyester material, durability and functionality* When photograph outdoors in cold weather, the large temperature difference between day and night may cause dew and fog inside the telescope or lens, affecting imaging and efficiency. Use the defog belt to fog and water, which can help more stable photography*Intelligent temperature control, faster heating, more uniform heating, longer service life*Powered by 12V mobile power supply (not included), connector type DC5521*Suitable for astronomical telescopes of various calibers, camera lenses, bird-watching mirrors, guide mirrors, .Specifications:*Product Name: Astronomical Telescope Lens Dew Heater*Material: Plastic + Polyester*Size: approx.530*50mm: Suitable for 130mm diameter lens;630*50mm: Suitable for 160mm diameter lens;830*50mm: Suitable for 220mm diameter lens;930*50mm: Suitable for 225mm diameter lens;1230*50mm: Suitable for 350mm diameter lens;*Color: Black and Red*Weight: about 200g-500gPackage Content:1 x Lens Dew Heater

• [OPTICS-FRIENDLY ANTI-CONDENSATION STRAP] A dedicated lens and telescope dew heater designed to reduce internal fogging for telescopes, camera lenses, spotting scopes and guide scopes during long observation or .
• [FAST, UNIFORM HEATING TECHNOLOGY] Heating element with intelligent control warms up quickly and spreads heat evenly to prevent uneven condensation that can blur images.
• [ 12V DC5521 CONNECTION] Powered by 12V with a DC5521 for use with common 12V mobile power supplies and battery packs; ideal for remote observing where mains power is unavailable.
• [PRACTICAL CONSTRUCTION AND COLORS] Black and red color options with polyester outer material and plastic fittings offer functional durability and easy handling while in the field.
• [IMPORTANT SIZE NOTICE] PLEASE REFER TO YOUR OWN SIZE CHART RATHER THAN AMAZON'S SIZE CHART; measure your scope or lens to you select the correct dew heater length.