NEEWER USB Lens Heater, 12"/300mm Lens Warmer for DSLR Camera and Telescope, 3 Temperature Regulator Settings, Dew Heater Strip Prevents Dew, Fog & Condensation for Telescope Camera Astrophotography
【16"/400mm Lens Heater】 Compatible with lenses and telescopes up to 16"/400mm in circumference, this lens heater prevents dew, fog, and condensation from building up when taking photographs in cold weather. Note: The effective lens heater length is 275mm, please confirm before purchasing.
【USB Power Source】 Plug into a USB power adapter, a portable charger, or other power sources that offer a USB 5V 2A output. The 4.9ft (1.5m) long USB cable makes the heater ideal for indoor and outdoor use
【3 Temperature Levels】 A temperature regulator offers 3 settings (High Mode: 55-65°C; Middle Mode: 45-55°C; Low Mode: 35-45°C) to suit different weather environments
【Touch Fastener Design】 With handy touch fasteners, the heater can wrap around your lens or scope with security and is easy to adjust
【For Other Applications】 As a multipurpose heater, it can also keep your baby bottle and coffee cup warm in winter days, or warm up your wrist, elbow, and ankle when they feel cold