COOWOO Lens Heater Warmer Dew Heater Strip with Temperature Regulator for Universal Camera and Telescopes Lens Narrow Strip Version

Draws about 1.5A in use, so 7.5 watt heater when on "high". The temperature control is by on-off switching at a low speed, so it's a very simple and effective design.

Exactly what the doctor ordered.I used it several times on astrophotography excursions where my camera was set up for Timelapse's and where the temperatures are such that would cause the lenses to fog up. These prevented that from happening.Highly recommend.

There's a good amount of adjustment so it fits a range of lenses (up to Ø 4.5"). Has long cords so putting the battery pack on the ground is possible even with a tall tripod. Heat strap is padded so it should provide some insulating benefits as well.

Simple product, does the job no ifs ands or buts.

This lens warmer worked great for Colorado temperatures. I purchased this for my boyfriend as we recently had camera issues due to low temperatures in Chicago in December. This warmer kept our camera warm enough for photops even while in the mountains! Great quality for the value. Plus it feels good, haha

Another reviewer mentioned the switch turns itself off. Yes, when it senses no power. Just make sure you have power to it, turn on the switch, and remember any power interruption turns it off.

Controller switch turns itself off after only a few minutes of use. Spoiled many of my photos. Bypassed and discarded the switch and plugged directly into battery.

Does the job

Sehr gut für Okulare am Teleskop