Reddit mentions of Nitecore NU20 360 Lumens Rechargeable Lightweight LED Headlamp with Lumen Tactical Adapter and USB Cable

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INCREDIBLY BRIGHT - The NU20 utilizes a CREE HP-G2 S3 LED for an impressive output of 360 lumens and 87 yards of throw. Choose from four brightness settings and two special modes with the easy-to-operate single button control.COMPACT & LIGHTWEIGHT - You'll barely notice the NU20 is there with its featherweight body weighing 1.66 ounces including battery! The compact nature of this headlamp means no bulky or awkward accessories holding you back.WIDE ANGLE ILLUMINATION - Take control of your light with 100° coverage of your field of vision. The tiltable bracket can also adjust an additional 52° up or down to eliminate deadspots.BUILT-IN RECHARGEABLE BATTERY - Enjoy up to 100 hours of runtime off the built-in li-ion battery which is engineered to last at least 500 charging cycles. The battery also has a power indicator to tell you when it's time to recharge via the micro-USB port located on the side.COMPLETE KIT - NU20 headlamp, headband, Lumen Tactical Adapter and USB cable