1. Sightron is a well-known brand for rifle scopes and dat sites.
In the hunting world, it is not uncommon to stay in harsh mountain environments for weeks in rugged mountainous areas. With high durability and excellent optics to withstand such environments, the Sightron products are highly rated not only in the hunting world, but also in a wide range of industrial, including astronomical observation, bird observation, forestry and power companies as well as the military.

2. 3 levels of brightness can be changed.
This model can change brightness in 3 levels of 80 lumens, 80 lumens, 40 lumens and 20 lumens.

3. Uses AAA batteries.
Uses AAA batteries that are available in a convenient store. You can rest assured that you can get it right out of the box.

Additional Features
It is IPX8, which is the highest standard of waterproofing.
The body is made of aircraft aluminum.
Uses Crees XP-G LEDs
The body is made of aircraft aluminum.
LED light life: 100,000 hours (100,000 hours).
Effective irradiation distance: 49.2 ft (15 m)
Uses Crees XP-G LEDs

From the Manufacturer

Lights up by one AAA battery

Brightness: 80/40/20 lumens, Strobe/SOS modes; Dimensions: 3.0 x 0.5 x 0.6 inches (76 x 13.5 x 15 mm); Weight: 0.5 oz (14.5 g); Power: AAA alkaline battery (1 piece) sold separately; Waterproof: IPX4

Lightweight, small and powerful light.

This product is a reliable domestic manufacturer.

This LED keychain light can be attached to a lightweight, compact sized key chain or other items.

Can be switched between 80, 40, 20 lm, and strobe SOS, and can be illuminated for approximately 2.5 hours at 20 lm.

IPX8 specification, so you can choose from any scene.

The main body is made of aircraft aluminum material for exceptional impact resistance and durability.

Accessories: O-ring, key ring

Durable The aircraft aluminum body is used for exceptional impact resistance and durability.	Fits in the palm of your hand and does not	Small but powerful. Switch between 80/40/20 lumens for different use depending on the scene.