BT40S is a wide beam and high brightness mountain bike front light. Utilizing four Cree XP-G2 Neutral White LEDs, four brightness modes, max output 1600-lumen. It including 7.4V 5200mAh BAK rechargeable li-on battery,more than 3hrs on high output. BT40S is the ideal illumination gear for mountain biking, touring, commuting, etc. -Utilizes four Cree XP-G2 Neutral White LEDs, max 1600lumens output -Powered by four BAK 18650 rechargeable Li-on batteries,7.4V 5200mAh -Uses high quality optical lens with a wide beam angle -4-Mode Electronic Switch-Low-Med-High-Turbo -Digitally regulated output-maintains constant brightness -Overheat protection function -4-Color & 5-Mode LED Indicator displays remaining battery capacity -Quick to attach and detach using O-ring mounting straps sized for 20mm-35mm handlebars -Made of durable aircraft-grade aluminum -Premium hard-anodized anti-abrasive finish -Water Resistant -42mm（Diameter）x50mm(Length) -105gram(Excluding batteries and accessories)
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