【Doctor Footprint】 -- FR1-001 red dot sight is compatible with Doctor, Vortex Venom footprint. It is also equipped with a detachable low picatinny mount that is compatible with most weavers, picatinny, and RIS rails.
【Waterproof】 -- It is O ring sealed, IP67 waterproof. With O-ring sealed structure to keep dry inside, can protect the inside electronic parts and extend the device life by 3-5 years.
【Excellent Performace】 -- The structure material is 6063 aluminum, 1500Gs shockproof, the max recoil is up to .45acp. 
【Advanced Technology】 -- Includes 6 different brightness settings (5 Daytime/1 NV) in bright and dim lighting with equal ease. 1 dim setting compatible with night-vision devices for low light nighttime use.