1. Finished Normal Anodized, 3-Color 2. Portable, Low Price 3. Secure Ring: Stainless Steel 4. Lens with Anti-Reflection Coatings on Both Sides 5. Engine : XENO DE2 Real linear LED driver, developed and made by XENO. Not-PWM LED driver: Non-Flickering and Absolutely Noiseless even at Ultra-Low level. XENO unique Quiet RSL technology. XENO unique GFC(Gamble Free Concept) impact-resistant technology. Built-in battery inverted-load protection. 6. Max Output: 430 lms / OTF / XM-L 7. Burning Time: Max 20hrs / at 20lms 8. Water proof: IPX-8; 10 meters dunk-resistance. Size: L96.5mm* Dia 21.5mm Net Weight: 48g(1.7oz). Packing Information: Blister; Size: L153.5*W92.5*H24.5mm; G-Weight: 65.8 g(2.3 oz).