The DRS 2.0 ENHANCED is powered by a CR2032 Battery(located on the side) and uses ambient light to auto adjust brightness (The sensor lowers brightness in dark locations and raises brightness in light locations) If you would rather have a manual adjust brightness version of this product then the DRS 2.0 is the product for you!

Description

–  Dynamic Reflex Sight 2.0 Enhanced
–  Color:  Black
– Fabric/Housing Material:  6061 T6 Aluminum
– Magnification:  1x
– Lens:  Multi-Coated
– Reticle:  5 MOA
– Red Dot Size Options: 5 MOA dot
– Illumination Controls: Auto/ Ambient Light Sensor (Automatic Dimming and Brightening)
– Illumination Settings: Always On
– Illumination Color:  Red
– Battery:  CR2032 (3V lithium battery)
– Battery Quantity:  1
– Battery Life:  2 to 3 years
– Waterproof & Fog Resistant
– Magnification Type:  Fixed
– 1 MOA Elevation and Windage Adjustments
– Automatic Controls
– Footprint: Viper

U.S. Optics DRS 2.0 Compatibility
Vortex Viper Footprint

Examples:

Glock:
MOS Plate #1

HK VP9:
Plate #5

Canik:
Plate #1

S&W M&P:
Plate #5

Nighthawk IOS System
Third Option