The F4 Flashlight is compact and super bright.  As the 4th light in our F series of EDC flashlight's it offers the best value in high end flashlights. But there's no sacrificing any of the quality that Focusworks is known for.  This flashlight is built to work, giving over 16 hours of runtime on a single charge on low mode. If max runtime isn't what you want then it has over 800 lumens to blast your retina’s.

• Nichia 519a 4500k  LED
• Qlite driver (simple low-medium-high operation) 
• Grade 5 titanium pocket clip
• Runs on a 14500 lithium ion rechargeable battery (sold separately)
• Runtimes:
  • 16+ hours on low
  • 30 minutes then steps down to medium for 3+ hours
  • It stores a little extra once its out of power so you can turn it on for a few seconds at a time to help you get home
• Weight with a battery 104g
• 4-1/16" (104mm) x 7/8" (22mm) diameter
• Designed and made in Canada

What emitter (LED) should you get?

This is our first light to offer the newest, state of the art Nichia 519a 4500k Emitter.  This emitter is very popular and was the driving force behind designing the F4.  It has a slightly rosy color and is a 90+ CRI emitter.

CRI is a measure of how well an LED shows color.  Sunlight is 100CRI.  So the Nichia 519a at 90+ is more than 90% as good as the sun at showing accurate colors.  

4500k is the color of the light.  Remember the yellowish color of old incandescent light bulbs?  That color was approximately 3500k.  Lower numbers indicate more yellowish light and higher numbers tell you it's bluer.  4500k strikes a nice balance between blue and yellow light and looks very nice.  Side note for more context, 6000k has a noticeably blue note to it.