SPECS: 3 in. x 1-1/4 in. x 1-1/2 in. Weight: 72 g Blitz mode (bike): 1 hour runtime at 400 lumens Low mode (bike): 2 hour runtime at 200 lumens Strobe mode (bike): 8 hour runtime at 200 lumens High mode (camp): 3-1/2 hour runtime at 100 lumens Long burn mode (camp): 8 hour runtime at 40 lumens Battery type: Lithium polymer battery Handlebar size: 22mm-35mm Retractable cord length: 2 ft. FEATURES: High-strength 400 lumen light with Blitz mode for pitch darkness Silicone around edges of light source dims brightness to a soft ambient glow Clips to bags and bike handlebars or mounts on head with a retractable retention cord for hands-free lighting Extremely light 72g weight for less imbalance Waterproof design survives submersion in water for rain drenching safety Dustproof and grit-proof for durability Micro-USB recharging ANSI FL-1 Standard 2 year warranty