CR1000, 1000 LUMENS (USB) - See Better and Further - Design for Road bikers that ride at night at fast speed and long distance - Dimensions (Headlight): 104 x 29 x 32mm - 1000 Lumens - LED: 1*CREE XM-L2 with a lifes pan 50 000 hours - USB Rechargeable and 2h to 45 hrs run time - Battery: 4000mAh/3.6V rechargeable Lithium ion - Mode: 2h (High beam), 2.7h (Mid Beam), 5.8h ( Low Beam), 25 (Eco), 43.5h (pulse Falshing) 45h (Quick Flashing) - Fits: 22.2mm to 35mm Handlebars - Material: Body Anodized aluminum, handlebar mount durable plastic - Remote Control - Water resistant - Weight: 140g