<br> <b>Feyachi Bore Sight 9MM Red Dot Boresighter</b> <br> <br> <b>Features</b> <br> 1. Made to fit the 9mm chamber, caliber specific. <br> 2. Each set batteries lasts up to an hour. <br> 3. Easy to use, fast gun zeroing and sighting and reduce wasted cartridges and shells. <br> 4.Sturdy brass construction. Easy to sit perfectly in the bore. <br> <br> <b>Specifications</b> <br> - Output Power: <5 mW <br> - Laser Class: IIIA <br> - Laser Wavelength: 632 to 650 nm <br> - Battery Type: AG3/LR41 <br> - Range for Sighting: 15 to 100 yds <br> - Dot Size: 2 in @100yd <br> - Operation: on/off end cap <br> - Operating Temp: F/C 14 to 122 / -10 to 50 F/C <br> <br> <b>Prompt </b> <br> As the bore sight doesn’t have the on/off switch, please remove the batteries after using.