Foursevens Preon PenLight Stealth Black Finish 180-Lumen Cool White Generation 2 LED LED: CREE XP-G2 , Max Output: 180 Out-the-front (OTF) lumens Material: Aircraft grade aluminum alloy and stainless steel Impact-resistant glass lens with Dual-coating - sapphire coating on the outside and anti-reflective coating on the inside for optimal efficiency and durability. Battery: Two AAA Three output modes: Low, Medium, High