The RMSw (Reflex Mini Sight Waterproof) is built for additional waterproof resistance and can remain submerged at depths of up to 30 feet for over 30 minutes without additional watertight mounting plates thanks to an upgraded gasket-sealed battery compartment. The HD model features a reinforced housing and retains all the legacy features of the original SMS and base RMS models, including the auto-adjust brightness, low-profile design and 20,000-hour operational life on a single CR2032 battery. This model features an all-black finish with a 4 MOA reticle. One CR2032 battery is included along with a mounting kit that consists of a shim, two sets of mounting screws (2x M4x8mm; 2x M4x10mm), two hex tools (1.5 & 2.5), four nylon washers and a battery cover. A plastic optic cover is also included for additional protection during storage and transportation.