FeaturesFits 12 Gauge Shotgun chambersLight weight and durableWorks with any sights (iron， optical， laser， holographic， etc)Long sighting rangeSpecificationsMax. Output Power：less than 5mWWeight：56gMaterial：AluminumLaser wavelength：635-655nmSighting Range：10 to 75ydsColor：RedPower：3x LR44 batteriesItems Included1 x Laser 12 Gauge Boresighter3 x LR44 batteries