TLM1164 Features: * Arrow Laser Sighting Tool * Designed For All Thread Arrows * Battery: LR-41 * Recommended Distance: 25-35 Yards * Power Source: 3 LR-41 Batteries Specifications: * Green Laser / 5MW Dimensions: * Power / Wavelength: 635 / 655 NM * Length: 2.4" * Net Weight: 0.4 Oz