4Sevens Preon 1, 4Sevens Blue, R5 Edition LED: CREE XP-G R5, Material: Type-III hard-anodized aircraft-grade aluminum 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: One AAA Seven output modes: Moonlight, Low, Medium, High, Max, Strobe, Beacon