Features: - Model number: CAL: .8x57JRS
- Environmental， recycle the wasted cartridges
- Accurate and precise
- Fastest gun zeroing and sighting system
- Maximum output power: Less than 5mW
- Wavelength: 635 - 655nm
- Power source: 3 LR41 button cell batteries or equivalent Color: Silver
Type: Laser Sight Package weight: 0.060 kg
Product Size(L x W x H): 5.70 x 1.30 x 1.30 cm / 2.24 x 0.51 x 0.51 inches
Package Size(L x W x H): 17.90 x 8.90 x 2.00 cm / 7.05 x 3.5 x 0.79 inches Package Contents: 1 x Laser Bore Sighter， 3 x Button Cell Battery