The green rail laser is perfect to track targets and great for home defense.
Length: 2.42 inches                            
Finish: matte black
Height: 1.2 inches                       
Weight: 1.4 ounces
Voltage: 3 OV                                   
Battery: 4 x LR44
Battery life: 3 hours continuous                                                
Laser: 5 mill watt green