The Serfas E-Lume Series light line was developed to be the best on the market at the very best value. These headlights will meet and exceed their expected lumen output while offering you all the features you've come to enjoy from Serfas lighting. - Compact Lightweight Aluminum Design - Super Bright (650 Lumens) Output - Water Resistant Rating: IPX6 - 3 Level Battery Life Indicator - Last Mode Memory - Max Charges Rate of 1A - Charges from Dead to Fully Charge in 2.75 hours (Using 1A Rated Charger) - Solid Modes: Overdrive (650 Lumens): 2 hrs, High (400 Lumens): 3.5 hrs, Medium (200 Lumens): 5 hrs, Low (100 Lumens): 10 hrs - Flash Modes: Daytime Flash (650 Lumens): 60 hrs, Low Flash (100 Lumens): 28 hrs - Weight: 162 Grams with Bracket - Battery: LG 1-Cell Li-Ion, 2600mAh Includes: - Micro USB Cord - Handlebar Mount