Ade Advanced Optics Zantitium Red Dot Giant Window Reflex Sight 40k Battery Life

New Production made several improvedments since initial releasing in Jan 2019 New advanced battery technology gives up to 3000 hours on bright setting and up to 40k hours on Low setting with a 2032 Battery(Included). Top load system, no need to remove the sight to change the battery. The biggest handgun sight on the market! Actual size is. 2.25" Length x 1.4" Width x 1.27" Height. It gives up to twice bigger window than other micro red dot.The red dot is compatible with Ade handgun mounts for Glock Barreta HK UPS SW MP SIG P226 Springfield Ruger LC9 LC9s LC380 SR9 SR22 SR40 SR45. Red dot DOES NOT auto power off. It stays on til use manually power off. It has multi brightness level with one adjustment button. to turn the brightness up and one adjustment button to turn the brightness down. Hold the UP Arrow to power on. Hold the Down Arrow button to power on/off. RD3-015 is different than other ADE models such as RD3-006,RD3-009,RD3-012,RD3-013 that have the same footprint as Vortex Venom,Burris Fastfire,Meopta, Docter,Insight. Due to the larger size,this sight does not fits "Optic Ready"handgun that keeps the rear sight such as Glock MOS.It only fits Pistol that need a mounting plate to replace rear sight 4 MOA dot. Shock proof，Fog proof and Waterproof for 30 minutes under 4ft water. Feature 1 M.O.A wind age and elevation adjustments with audible click. This red dot can also be used with a long range rifle scope for that perfect Backup System.