Red Laser: Freq. 635-655nm, Class IIIa laser; Weaver style mount will fit most weaver and picatinny type rails; Fully adjustable for windage and elevation; Side to side toggle On/Off end cap switch; All aluminum construction; Uses 3 each AG13 button cell batteries (included); Includes mounting tools; Compatible with Optional ALWS Pressure Switch (available seperately); Black anaodized finish; International orders will not include batteries