Perfect for hunters, competitive or recreational shooters.<br><br><strong>Features:</strong><br>Compact, lightweight and durable.<br>Easy and convenient to use with any bore sighting system.<br>Solid metal construction.<br>Easy-to-use, self-contained bore sighting system fits in the chamber of your rifl or pisto.<br>Works with scopes, holographic red dot sights, and variety sights.<br>Insert the batteries and screw the cap to turn on the bore sighter, remove the batteries to turn off.<br>Includes 4 sets of batteries.<br><br><strong>Specifications:</strong><br>Material: Brass                    <br>Maximum output power: Less than 5mW<br>Wavelength: 635 - 655nm <br>Power source: Four AG3 button cell batteries<br>Package weight: 37g / 1.29oz<br>Package size: 7.5 * 6.5 * 1.5cm / 3.0 * 2.6 * 0.6in<br><br><strong>Package List:</strong><br>1 * Bore Sighter<br>4 * Batteries