ADE NUWAcc is the first(and the only)green dot with RMRcc footprint that has TOP BATTERY LOADING system, no need to Remove the sight to change the Battery that requires re-sight in and waste ammo. Battery life approximately 500-800 depends on the brightness setting. With Motion Activated(Motion Awake) function, while the NUWAcc PRO is turned on, the green dot illumination goes to sleep after five minutes of inactivity, but when any motion or vibration is detected, it instantly switches on illumination at the previous brightness setting. Operates with a single CR1632 battery. 6 daylight brightness setting and 1 NV setting. The Night Vision Dot is not visible by the human eye, it is can only be seen thought a Night Vision. One of the first questions you might have when discussing any new micro green dot is: what will it fit? Well, as evident in the list below, the NUWAcc right out of the gate fits a multitude of the most popular concealed carry pistols on the market through either direct adaptation to the firearm (if it is an optics ready model) or through the simple addition of a mounting plate that is compatible with RMRcc footprint. ADE NUWAcc fit on a wide range of handguns including most Glock models, Glock MOS, most 1911 Kimber models, Walther PPS, Springfield Hellcat, Springfield XD-S, Springfield Hellcat OSP, S&W Shield, S&W EZ, S&W Bodyguard, S&W Shield CORE, S&W Standard CORE, Kimber Micro 9, Kimber Ultra Carry, Sig 365, Sig 365 XL, and Sig 938. All mentioned pistols must have optic plate that is compatible with RMRcc footprint. Ade NUWAcc PRO created an iron sight curve at the end of the body, and also added two white dots on the curve. For the rear of part of the green dot to become a back up iron sight. With the ultra short design, the green dot provides a distance/gap on some full size optics ready pistols, to give enough distance to be a Co-Witness back up sight, in addition to the LED dot and pistol equipped iron sight. For non-optics ready pistols that need to use an optic plate/adapter to replace the pistol manufacturer equipped rear sight, ADE NUWA's rear white dot will act as a pistol factory original rear sight for Co-Witness. *All of the pistols listed will NOT fit directly and will require an adapter plate Specifications for ADE Advanced Optics NUWAcc PRO Motion Awake 1x20mm Micro Green Dot Sight: Manufacturer: ADE Advanced Optics Color: Black Finish: Anodized Fabric/Material: 6061 Aircraft Aluminum Magnification: 1 x Objective Lens Diameter: 25.7 mm Reticle: 3 MOA Illumination Color: Green Eye Relief: Unlimited Adjustment Type: MOA Adjustment Click Value: 1 MOA Emitter Type: Open Battery Type: CR1632 Battery Life: 10000 hours Fogproof: Yes Weight: 1 oz Additional Features: RMRcc Footprint Red Dot Sights-Footprint: RMR Attachment Type: Slide Package Contents: ADE Advanced Optics NUWAcc PRO Motion Awake 1x20mm Micro Green Dot Sight Lens Cloth Screws Tools Instructions Rubber Cover Battery