Survival Land LS-100 Laser Sight Specifications: Laser class: IIIa Laser range：50-100m Material: high quality aluminum alloy Max. Output Power:＜5mW Weight: 28.6g Length: 30mm Wavelength: 625-650nm Features: Compact, small size, low profile Windage and elevation adjustable (wrench included) Easy operate On/off press-button switch in the back of the sight Detachable 20mm weaver rail, mounts securely onto standard pistol rail Package Included: 1x Red Dot Sight 1x Wrench Key 3x AG3 Battery