Black Diamond Onsight 375 Headlamp 6011-845

Black Diamond Onsight 375 Headlamp

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Show Description

Alpine start or late-night finish, this light is built to send. The flood setting works for climbing, the spot for descents and complex route finding. The PowerTap™ feature cycles through flood and spot, perfect for “what’s that?” moments. Power options include easy to source AAAs (included) or re-chargeable BD 1800 li-ion battery (sold separately).

  • Slim light head has plenty of tilt for working close to the wall.
  • Flood and spot light modes
  • PowerTap goes from any brightness mode to full power with a tap on the housing.
  • Smooth dimming feature lets you dial in the perfect brightness.
  • Mode memory remembers last setting used.
  • 1-button control for spot and flood lighting.
  • IP67 waterproofing protects up to 1m of submersion for up to 30 minutes. Note: it's best to dry it out completely before storing it.
  • 3-level LED power meter.
  • Lock-out mode prevents accidental activation.
  • Regulated output maximizes battery life.
  • Perforated headband breathes well and dries quickly.
  • Compatible with both 3 AAA batteries of the BD 1800 Li-ion battery (sold separately)

Tech specs

Show Tech specs
Weight 86g
Ideal for Climbing
Beam distance - low 8m
Beam distance - high 88m
Boost mode

Briefly increases the light output to maximum brightness and distance.

Light source 2 LEDs
Burn time - flash 100 h
Burn time - low 72 h
Burn time - high 4.5 h
Max light output

The total quantity of light emitted in every direction from a source of light; measured in lumens.

375 lumens
Beam pattern

Beam pattern affects how much you can see within the area of light thrown from the headlamp. Wide beams are good for close-up; spot or focussed beams are good for long range visibility.

  • Spot
  • Wide
IPX rating

Indicates the degree of protection against liquid. IP X1: Dripping water while in normal operating orientation; IP X4: Splashing water; IP X5: Water jets; IP X6: Powerful water jets; IP X7: Immersion up to 1m ≤ 30 minutes; IP X8: Suitable for submersion as specified by manufacturer.


Rechargeable lights give you hassle-free recharging with almost any power source. Replaceable batteries provide instant power, but you’ll need to bring extra batteries, recycle used ones and buy new ones.

Red light mode No
Regulated output

On regulated lights brightness is consistent, and does not decrease gradually as the batteries are drained.

Batteries 3 AAA (included) or rechargeable battery pack (not included)
Flash mode No
Made in China