--- product_id: 228706737 title: "SVBONY SV172 Dew Heater, Lens Warmer 240mm, Universal for Telescope Camera" price: "134.77 DT" currency: TND in_stock: true reviews_count: 13 url: https://www.desertcart.tn/products/228706737-svbony-sv172-dew-heater-lens-warmer-240mm-universal-for-telescope store_origin: TN region: Tunisia --- # USB-powered universal compatibility Lightweight 66g design 3-level adjustable heating modes SVBONY SV172 Dew Heater, Lens Warmer 240mm, Universal for Telescope Camera **Price:** 134.77 DT **Availability:** ✅ In Stock ## Summary > 🌙 Keep your lens crystal clear and your night sky uninterrupted! ## Quick Answers - **What is this?** SVBONY SV172 Dew Heater, Lens Warmer 240mm, Universal for Telescope Camera - **How much does it cost?** 134.77 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/228706737-svbony-sv172-dew-heater-lens-warmer-240mm-universal-for-telescope) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Sleek & Lightweight:** At just 66g and 50mm width, it won’t interfere with your telescope’s focus or add bulk. - • **Universal USB Power:** Plug into any power bank or USB port for on-the-go dew protection. - • **Rapid & Even Heating:** Aluminum core and alloy fiber wires deliver fast, uniform warmth to prevent lens fogging. - • **Multi-Use Versatility:** Not just for lenses—also warms water bottles or doubles as a wrist/knee strap for outdoor comfort. - • **Precision Temperature Control:** Choose from strong, medium, or weak heat settings to match your environment. ## Overview The SVBONY SV172 Dew Heater is a 240mm USB-powered lens warmer designed to prevent dew, fog, and condensation on telescope and camera lenses. Featuring a lightweight 66g build and a narrow 50mm width, it fits lenses up to 76mm in diameter without affecting focus. With three adjustable heating levels and fast, even heat distribution via an aluminum core and alloy fiber wires, it ensures reliable dew protection powered conveniently by any USB source. ## Description desertcart.com : SVBONY SV172 Dew Heater, Lens Warmer 240mm, Universal for Telescope Camera | Strong Medium Weak 3 Gear Regulator Temperature, USB port, Prevents Lens from Dew, Fog and Condensation for Astrophotography : Electronics Review: Dew heater - Works well and low power usage Review: Nice Dew Heater strips - I bought several of these dew heaters for my telescopes and lens, and found them to be very well made, at a great value. They can be fitted snuggly around the tubes/eyepieces and remain fixed in place. Proper sizing [circumference range] for your intended use is critical, so make sure you purchase the correct size for your application [as they don't stretch (and shouldn't)] As a test, I tried strapping two units in-line to wrap a larger telescope tube and they worked great... just requires 2 USB ports. The included switch/temperature control is compact and very easy to operate. The nice little padded mesh travel/storage bags are a nice benefit too. I was skeptical that these 5v USB powered (vs typical 12v powered units), devices would be able to provide enough 'heat power' to defeat dew onset, but they work very well; and their quick/convenient USB plugs makes hookup (into 60W USB charging hub) quick -n- easy. They need just a bit more time to heat up as compared to older style 12v [higher amps] strip heaters, but they get the job done. Their value to benefit and build quailty is terrific, and I suspect that I should get multiple years use out of them. ## Features - USB port design; 1.8m USB cable length you can connect it your power bank or any other power source with a USB port; 1.9A to 2.0A input current; 5V input voltage - Universal lens warmer;Lens Warmer prevents telescope camera lens from fogging dew by warming up the lens on a camera or telescope; it also warming up water bottle and use as wrist knee strap - Fit external diameter below 76mm; 50mm narrow width does not interfere focusing and will not produce dark corners in the field; 66g or 2.32oz net weight will not be a burden for your telescope - Temperature adjustment; strong medium weak 3 gear heating modes that you can adjust the temperature according to your requirements - Heating fast and evenly; built in aluminum make heating evenly; Alloy fiber heating wire provides super fast;Three layer insulation material to reduce heat dissipation ## Technical Specifications | Specification | Value | |---------------|-------| | Best Sellers Rank | #157 in Camera Lens Accessories | | Customer Reviews | 4.6 out of 5 stars 306 Reviews | ## Images ![SVBONY SV172 Dew Heater, Lens Warmer 240mm, Universal for Telescope Camera - Image 1](https://m.media-amazon.com/images/I/616ltBuZziL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Dew heater *by D***T on May 28, 2026* Works well and low power usage ### ⭐⭐⭐⭐⭐ Nice Dew Heater strips *by J***Y on May 20, 2022* I bought several of these dew heaters for my telescopes and lens, and found them to be very well made, at a great value. They can be fitted snuggly around the tubes/eyepieces and remain fixed in place. Proper sizing [circumference range] for your intended use is critical, so make sure you purchase the correct size for your application [as they don't stretch (and shouldn't)] As a test, I tried strapping two units in-line to wrap a larger telescope tube and they worked great... just requires 2 USB ports. The included switch/temperature control is compact and very easy to operate. The nice little padded mesh travel/storage bags are a nice benefit too. I was skeptical that these 5v USB powered (vs typical 12v powered units), devices would be able to provide enough 'heat power' to defeat dew onset, but they work very well; and their quick/convenient USB plugs makes hookup (into 60W USB charging hub) quick -n- easy. They need just a bit more time to heat up as compared to older style 12v [higher amps] strip heaters, but they get the job done. Their value to benefit and build quailty is terrific, and I suspect that I should get multiple years use out of them. ### ⭐⭐⭐⭐⭐ Excellent *by D***R on July 8, 2026* works great at maintaining temperature. Nice quality. ## Frequently Bought Together - SVBONY SV172 Lens Warmer, 240mm Lens Heater Warmer Dew, 3 Gear Regulator Temperature USB Universal Dew Heater Strip for Telescope Camera - SVBONY SV192 Dew Heater Strip 560 mm Lens Heater Warmer for Telescope DSLR Camera Lens Outer Diameter Below 178mm --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/228706737-svbony-sv172-dew-heater-lens-warmer-240mm-universal-for-telescope](https://www.desertcart.tn/products/228706737-svbony-sv172-dew-heater-lens-warmer-240mm-universal-for-telescope) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-09-05*