ADE NUWA is the first (and the only) red dot with RMS/RMSc 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. Specifications for ADE Advanced Optics NUWA Micro Red 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: 2 MOA Dot Illumination Color: Red Eye Relief: Unlimited Adjustment Type: MOA Adjustment Click Value: 1 MOA Emitter Type: Open Battery Type: CR1632 Fogproof: Yes Length: 1.5 in Width: 0.88 in Height: 0.89 in Weight: 0.55 oz Condition: New Red Dot Sights-Footprint: Not Applicable Mount Type: Picatinny Attachment Type: Picatinny Features of ADE Advanced Optics NUWA Micro Red Dot Sight Designed to fit Canik Elite TP9 SC, Canik METE SFX, Canik METE SFT, METE MC9, Sig P365X/P365XL/P365XL SPECTRE COMP, Ruger Max-9, Glock 43X MOS/48 MOS (not compatible with regular Glock 43x/48 that are not MOS), Springfield Hellcat OSP, S&W Shield 2.0 Optics Ready, S&W MP9 EZ, S&W M&P shield plus performance center, Walther PPS M2 Optics Ready, Girsan MC1911SC Ultimate or any pistol/mounting plate/slide with RMS/RMSC screw pattern/footprint. Hard coated aircraft aluminum and multi-coated glass. Not plastic body with polymer lens. ADE NUWA is the first (and the only) red dot with RMS/RMSc 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. Comes with screws for several Optics Ready handguns. Does not comes with any mounting plate such as picatinny mount or plate made for a specific handgun. Ade Nuwa 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 red dot to become a back up iron sight. With the ultra short design, the red 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. ADE Nuwa is manual activated by pressing the on/off switch. Press and Hold switch for 2 seconds to turn on/off, quick press to adjust the brightness from low to high. Package Contents: ADE Advanced Optics NUWA Micro Red Dot Sight Lens Cloth Screws Tools Instructions Rubber Cover Battery