Does this device have to use the timer? Can it stay on and off without using the timer? Is the the timer just an additional feature?

You do not need to use a timer with this device. Additionally, it has three heat settings: low, medium, and high.

What's the wattage for each setting hi/med/lo ?

Not sure wattage. I used in sub freezing (20*F) weather on lowest setting and had no fogging/dew on Nikkor Z20mm 1.8, Nikkor Z70-200 2.8, and a Tokina 14-28 2.8. Works well, surprisingly low cost. (I use a cheaply rechargeable battery bank)

Does this unit automatically turn off? i need a lens warmer that will last 4-5 days without turning off.

Only if your battery runs out. No thermostat… just constant heat settings

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USB Lens Warmer, Lens Dew Heater Strip with Temperature Regulator, Condensation Prevention for Telescopes Camera DSLR Lens Telescope Eyepieces Less Than 3.15 inch (80mm) in Diameter

USB Lens Warmer, Lens Dew Heater Strip with Temperature Regulator, Condensation Prevention for Telescopes Camera DSLR Lens Telescope Eyepieces Less Than 3.15 inch (80mm) in Diameter

Product ID: 184540333

Details

Brand
KIWIFOTOS
Eye Piece Lens Description
Plossl
Finderscope
Reflex
Focus Type
Manual Focus
Item Weight
59 g
Objective Lens Diameter
8 centimeters

🔌USB powered for on-the-go warmth

🌡️3-level adjustable temperature control

🛡️Fast heat transfer & thermal insulation

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Description

🌟 Never miss a shot—keep your lens warm and your vision sharper!

CUSTOM HEAT CONTROL - Low, medium, and high settings adapt to any chilly environment effortlessly.
STAY FOG FREE ALWAYS - Prevents lens dew and condensation for crystal-clear shots and views.
PLUG PLAY PORTABILITY - USB-powered design lets you power up from power banks or laptops anywhere.
FITS MOST LENSES UNDER 80 MM - Flexible, adjustable strip ensures a snug fit on your DSLR, telescope, or eyepiece.
DURABLE COLD RESISTANT BUILD - Withstands temperatures down to -40°C without cracking or losing performance.

The USB Lens Warmer by KIWIFOTOS is a compact, adjustable dew heater strip designed for lenses and eyepieces under 80mm diameter. Featuring a 1.5m temperature regulator with three heat settings, it prevents condensation during cold, humid conditions. Powered via USB, it offers versatile outdoor use with fast heat transfer and durable materials that resist freezing down to -40°C. Ideal for photographers and astronomers seeking reliable, fog-free optics in any environment.

Specifications

ASIN	B083NJCFCH
Additional Features	Adjustable Temperature Regulator with Low, Medium, and High Modes
Best Sellers Rank	#746 in Digital Camera Accessories
Brand	KIWIFOTOS
Coating	Fully Coated
Compatible Devices	Laptop, Power Bank, [Other devices with USB port]
Customer Reviews	4.5 out of 5 stars 270 Reviews
Eye Piece Lens Description	Plossl
Finderscope	Reflex
Focal Length Description	3.15 inches
Focus Type	Manual Focus
Item Dimensions D x W x H	1.38"D x 5.24"W x 1.38"H
Item Weight	59 g
Manufacturer	Jinjiacheng Photography Equipment Co.,Ltd.
Manufacturer Part Number	DHS-1
Model Number	DHS-1
Mount	Altazimuth Mount
Number of Items	1
Objective Lens Diameter	8 centimeters
Optical Tube Length	3.15 inches
Optical-Tube Length	3.15 inches
Power Source	USB Powered
Product Dimensions	1.38"D x 5.24"W x 1.38"H
Telescope Mount Description	Altazimuth Mount
Unit Count	1 Count

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S$39

Duties & taxes included

In stock

Sold byAmazon SINGAPOREDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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TrustScore 4.5 | 7,300+ reviews

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