Lancer Tactical Red and Green Dot Scope

SPECIFICATIONS:
MAGNIFICATION: 1x
LENGTH: 4.75 IN (12 CM)
OBJECTIVE APERTURE: 1.0 IN (25MM)
EYE RELIEF: UNLIMITED
LENS CAPS X 2
BATTERY: 3 x AG13 BUTTON CELL (INCLUDED)

FEATURES:
MOUNTS ONTO 20MM RAIL
EASY MOUNT TIGHTENING KNOB 
FIVE LEVEL BRIGHTNESS CONTROL