Bright As Day 4000 Headlamp
Bright As Day 4000 Headlamp
Bright As Day 4000 Headlamp
Bright As Day 4000 Headlamp
Bright As Day 4000 Headlamp
Bright As Day 4000 Headlamp
Bright As Day 4000 Headlamp
Most Powerful

Bright As Day 4000 Headlamp

4000 real lumen
1,5 -30 hours

Our 8 LED setup is measured at 4,000 lumens. While in motion, our
novel blade design will cool down the lamphead allowing the LED
to keep delivering its full power. The ideal companion to make your
next ride or ski trip as bright as day.

Recommended for all outdoor activities at fast pace where
precision matters. Ideal for ski touring and mountain biking as well
as motorized activities.

All our headlamps come with an extension cable included for convenient battery carry.

Tech Specs

True Lumens 4,000
Light Spread 8 x 15°

Lamp head weight
Lamp head 6061-T6 Aluminium Alloy
Battery weight 345g
Battery type
4 cells type 21700 4,800mAh (14.8V)
Headband type
Total lamp weight 522g
Runtime 4 dimm levels:
#1: 30h (5%, 200lm)
#2: 6h (25%, 1,000lm)
#3: 3h (50%, 2,000lm)
#4: 1h30 (100%, 4,000lm)
Mount GoPro QuickClip compatible
Waterproof rating IP67

  • In stock, ready to ship
  • Inventory on the way
Regular price€499,00
Tax included. Shipping calculated at checkout.
More product details

Nylon Head-strap
1 Meter Extension Power Cable
Wall Charger Cord
Zippered pouch

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The Detail
8 LEDs, 100g head

When versatility meets performance. Easier to cool, the 8 LEDs give you a better light distribution. The Bright As Day 4000 is your go-to when it comes to fast & light, from your riding commute to your next adventure in the backcountry!

Used by Pro like Nikolai Schirmer

“These lamps from the Norwegian company changed the game when they came out, making it possible to ride safely 24/7, and they’re still the most reliable I’ve used. The new Bright As Day 4000 is more than enough light to ride big couloirs or tree skiing, in a tiny package, and with all the battery life.» 

Norwegian freeskier and filmmaker extraordinaire Nikolai is from Tromsø in Northern Norway. 

He has been using Moonlight lamps for a long time, just as much for skiing in exposed terrains as for behind the scenes during his creative work as a filmmaker. If you are not following him yet, go discover his inspirational work on youtube and social media.

Nikolai Schrimer + Moonlight

IP67 and weather resistant

The Bright As Day 3200 is weather sealed against splashes, heavy rain and extremely moist conditions. It can deal with extreme cold weather down -20ºC.

'Aluminium blade' passive cooling

The aluminium blades allow for the electronics to function constantly at their full potential and avoid overheating. It will never decrease lumens to cool itself.

GoPro QuickClip compatible

A Moonlight signature, all of our headlamps feature the GoPro QuickClip compatibility to ease the switch from one setup to another!



I’ve been using Moonlight for several years and this is the best lamp they’ve come up with yet. The perfect balance of size, weight and lumen. The 4000 makes me feel like I can do all the stuff I do in sunlight!

Nikolai Schirmer, '20 European Skier Of The Year

Went into my first backcountry night photo shoot with no expectations and this headlamp blew my mind... Crazy how much light Moonlight managed to cram into such a small package!

Ståle Sandbech, Olympics & X Games medalist