NEEWER 16"/400mm USB Lens Heater Warmer with 3 Temperature Settings, Dew Heater Strip Prevents Dew Fog Condensation for DSLR Mirrorless Camera Telescope Binocular Astrophotography, HW-17B

【Fast Warming Heater for Lens】 NEEWER HW-17B USB lens warmer features an upgraded heating element with a fast, continuous warming system that gently raises the lens temperature above the dew point, efficiently preventing fog, dew, and condensation to keep your view crystal clear in cold or humid conditions, extending your shooting session 【Lightweight & Wide Compatibility】 With a 16"/400mm length (11.8"/300mm effective length), this lens heater fits camera lenses, telescopes, and binoculars with a circumference of up to 10.8"/275mm and a diameter of 86mm. Weighing only 2.6oz/75g, its portable design delivers gentle warmth without adding bulk to your gear. Ideal as content creator essential and influencer must have photography accessories 【3 Temperature Settings】 Equipped with a temperature regulator, the dew heater strip offers 3 temperature levels (High: 55-65°C; Medium: 45-55°C; Low: 35-45°C) to prevent lens fogging in varying weather conditions, from cold nights to humid mornings 【USB Powered for Convenience】 Works with any 5V USB power source, such as portable chargers, laptops, or USB adapters, ensuring continuous use during outdoor and travel shooting or observation. The 4.9ft/1.5m long USB cable provides extra flexibility for easy positioning 【Simple Touch Fastener Design】 Featuring handy touch fasteners, the heater securely wraps around your lens or scope and allows quick, easy adjustment for a perfect fit