551 552 553 Red Green Dot Holographic Sight Scope 20mm Mount

SPECIFICATION

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551 Features:
power safe feature, automatic power-off in 2 hours
Easy to setup, fits any 20mm rail
Elevation and Leverage adjustment on the side of sight
Colour: black
Battery: 4 x LR44 batteries (Not Included)
Dimension: 10 cm (L) x 5cm (W) x 6cm (H)
About Weight: 220g
A: brightness adjustment (upward)
B: brightness adjustment (downward)
C: Reticle colour switching (Red / Green)

552 Features:
Magnification: 1.0x
Objective Lens Dia: 30x22mm
Length: 130x50x65mm
Weight (net): 275g (9.7 ounce)
Eye Relief: Free
Field of View (100yds): 30 yards
Colour: black
Optics Coating: Multi Coated
Reticle: Red and Green Reticle with 5 Levels Brightness
Power Supply: Two pieces of 2 AA battery(Not Included)
Evaluation Range: MOA
Windage Range: MOA
Feature 1/2 M.O.A windage and elevation with audible clicks.

553 Features:
Easy to setup, fits any 20mm rail
Elevation and Leverage adjustment on the side of sight
Shockproof and weather proof material
Colour: black
Battery:1xCR123A(Not Included)
Weight: 300g
A: brightness adjustment (upward)
B: brightness adjustment (downward)