Z-Bolt Standard Economy Green Laser PointerPersonalized Emerald Green Laser Pointer.The computerized APC diode drive circuit features "Automatic Power Control". The APC circuit is based on aphoto diode feedback loop. The photo diode monitors the optical output and provides a control signal for thelaser diode, helping to maintain the diode operation at a constant optical output level. The circuit adds to thelifetime of the laser, prevents overheating, and provides overall power output stability & efficiency.Remove Cap Switch. Insert two AAA batteries (+) Tip toward cap. Replace Cap. Do not attempt to remove aperture; voids warranty.Box Contents - Features:Matte Black Finish (Polished Brass Accents)Rugged Gun Metal Travel & Carry CasePower Supply - 2 AAA Alkaline BatteriesUser Guide & Specification CardLaser Specifications:Length 5.27 in. x Diameter 0.51 in. ( 134 mm x 13 mm )Wavelength (Color) - 532 nm (Emerald Green)Diode Operating Life - 3,000 hoursCircuit Type - Computerized APCBeam Diameter - Source - 1.1 mmOutput Mode - Constant WaveOutput Power - 1.0~5.0 mWRange ( Night ) - 2 MilesFDA Safety Class - IIIaANSI Safety Class - 3RManufacturer's Warranty - 1 YearEngraving and Ordering Information:Laser product is laser engraved in-houseEngraving shows a brass/gold colorEngraving never fades or wears offGift box and batteries are includedCan be engraved rush in 1 day ( upgrade)Standard text engraving is free, engraves gold. Other engraving options, logo engraving is hereFrequently Asked questions, order details and moreNeed to add a logo to your order?