.223 REM Cartridge Laser Bore Sighter. Three LR41 batteris

Minimum Range for Sighting: 15 yds
Maximum Range for Sighting: 100 yds
Wavelength: 645nm, 632nm (.223 20X)
Operation: On/Off End Cap
Battery Life: ~ 20 min
Laser Type: Visible Red Laser
Power: < 5mW
Battery: Three LR41 for .17, .223 & .223 20X, Three L626 for 9mm, Four L626 for 30 Carbine

Construction: Brass

Dot Size: 1.5 @ 100 yds.