The Specialized Flux 850 bike light is the upgrade to the previous Flux 800 and 900, and gets the game-changing Mode Shift found also on the Flux 1250. This means there are three steady modes, all using both the wide and spot beams. You can swithch from Steady Low to Steady High in a single push, without cycling through a flash mode. If you press-and-hold the button for two seconds, you get into the secondary - flash - modes: Steady Flash to be seen in busy urban environments, Flash Mode for endless runtime, and two Flashlight modes with 10 and 20 hours of runtime for hanging around the campsite, or when you forget to charge your light and need to conserve the last few percent of battery life to get home.

The bike light is IPX7 waterproof, which means this light can survive being submerged 1 meter deep for 30 minutes. No, it's not meant for scuba diving. But is can handle anything you can throw at it on two wheels.

Features:

• Sculpted double beam pattern uses separate optics for wide and spot beams to put light where you need it and maximizes every lumen. The result is a beam pattern that torch-style lights can't touch.
• 1x CREE XP-L High Intensity LED plus 1x CREE XP-G LED
• Quick-release bar mount works on 22.2, 25.4, and 31.8mm bars to put the light above, below, or in front the stem to clear cables and computer mounts.
• Extra bright side lights to give you 180-degree visibility to other cyclists and motorists.
• 2600mAh Li-ion internal battery is USB rechargeable via included micro USB cable
• Depending on mode, up to an additional three hours of super-low output are available when listed runtimes expire. Trust us, someday you'll need this.
• Steady Modes: High mode: 850 lumens for 1:30 hours, Medium mode: 450 lumens for 3:00 hours, Low mode: 250 lumens for 6:00 hours
• Press-and-hold to turn off, long press-and-hold to enter secondary modes.
• Flash modes: Steady Flash mode: 300 + 200 lumens for 4:00 hours, Daytime Flash mode: 400 lumens for 20:00 hours, Very low mode: 100 lumens for 10:00 hours, Super low mode: 50 lumens for 20:00 hours
• Locout Extra-long press-and-hold to lockout light for travelling

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