The Holosun AEMS-MICRO is an enclosed pistol sight built around a compact micro footprint with a 0.71" x 0.71" viewing window. The Multi-Reticle System provides a 2 MOA dot, 32 MOA circle, or combined circle-dot reticle, with red, green, and gold reticle options. The sight uses a side-loading CR1620 battery with Solar Failsafe and Shake Awake technology, automatic and manual brightness adjustment, Memory, Lockout Mode, and eight daylight and four night-vision brightness settings. The 7075-T6 aluminum housing is hard anodized and rated IPX8 waterproof with 5000G vibration resistance.