Osight SE DPP Enclosed Red Dot Sight (DPP Footprint)

The Osight SE DPP is a compact, ultralight, and fully enclosed (enclosed emitter) red dot sight, designed for shooters who demand a reliable reticle under all operational and weather conditions. This model features the widely used DeltaPoint Pro (DPP) footprint, allowing the sight to be mounted directly or via an adapter plate onto compatible optics-ready pistols and carbine platforms. With a total weight of just 27.5 grams, including the battery, and a length of approximately 4.0 cm, this optic adds minimal mass to the firearm’s slide.

The most important technical feature of the Osight SE DPP is its fully enclosed emitter design. Unlike open-frame reflex sights, the LED light source is hermetically sealed within an anodized 7075-T6 aluminum housing. This prevents rain, mud, snow, sand, or lint from clothing from blocking the light beam to the lens. Thanks to its IPX7 rating, the optic is resistant to heavy precipitation and temporary submersion in water.

The optical system consists of a 21 × 14 mm aspheric lens with multiple coatings (multi-coated). The aspheric lens design minimizes peripheral spherical aberrations and provides a clear, color-neutral, and parallax-free reticle image. The Osight SE DPP features a versatile multi-reticle system: users can switch between a precise 2 MOA dot, a fast 32 MOA circle, or a combined circle-dot reticle. For varying conditions, the optic offers eight brightness levels for daylight and two special settings for use with night vision (NV) devices.

The power management system is designed for maximum operational continuity. The CR1620 button-cell battery is housed in a side-mounted battery compartment. This allows you to replace the battery without disassembling the optic, thereby preserving the zero setting and eliminating the need for re-zeroing. The integrated motion sensor (motion activation) automatically turns on the dot when motion is detected and puts it into sleep mode after three minutes of inactivity to conserve power. The maximum battery life is approximately 75,000 hours (when using only the 2 MOA dot). A built-in low-voltage indicator provides timely warning when the voltage drops below 2.2V by causing the dot to flash rapidly three times every minute.

Benefits for the Target Audience

- Fully sealed emitter: Provides maximum reliability; dirt, water, or snow cannot block the internal diode.
- DeltaPoint Pro (DPP) footprint: Direct compatibility with DPP cutouts on optics-ready slides and standard mounting plates.
- Flexible multi-reticle aiming picture: Switch at will between a fine 2 MOA dot for precision shots, a 32 MOA circle for quick target acquisition at close range, or a combination of both.
- Aspheric, multi-coated optics: Provides a clear, undistorted field of view with high light transmission and a consistent, parallax-free aiming point.
- Side-mounted battery compartment (CR1620): Allows for battery replacement without removing the sight, while retaining the zero setting.
- Intelligent motion activation: Activates immediately upon movement (“shake awake”) and automatically turns off after 3 minutes of inactivity, providing up to 75,000 hours of battery life.
- Rugged 7075-T6 construction: Aircraft-grade aluminum combined with IPX7 water resistance for reliable performance under heavy recoil and demanding weather conditions.
- Low-voltage warning: Flashes three times per minute as soon as the battery voltage drops below 2.2 volts, ensuring you’re never unexpectedly left with a dead battery.

Instructions for Use and Operation