Zebralight H603d Headlamp


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Zebralight H603d Headlamp
  • Operating Voltage Range: 2.7V - 6.0V
  • Beam Type: 120º flood
  • Head Diameter: 0.95" / 24.2 mm
  • Length: 3.85" / 97.8 mm
  • Weight: 1.4 oz. / 39 mm
  • PID thermal regulated outputs
  • Battery capacity indicator
  • Automatic stepping down from High to Mid and Mid to Low when battery capacity is low
  • Built in over-discharging protection (2.7V cut off)
  • Durable electronic soft touch switch
  • Smart user interface 
  • Precision machined unibody casing from premium grade aluminium bar stocks
  • Proprietary heat sinking design bonds the LED board directly to the unibody aluminium casing
  • Durable natural hard anodised finish (Type III Class I)
  • Sealed and potted LED driver circuitry
  • Battery reverse polarity protection
  • Tempered optical grade glass
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Zebralight H603d Headlamp

1 Review

5.0 Overall rating



My job involves inspecting the inside of vehicles and machinery. This light has a very broad 'flood' beam with almost zero discernible hotspot, which is perfect for me. The preset brightness modes are well spaced and usable in their own applications; I haven't delved into the custom modes yet. It's lighter and easier to use than others I've tried in the past. The headband is comfortable, has a decent range of adjustment and the mount for the light feels solid.


The Zebralight H603d headlamp has a maximum output of 900 lumens from the Cree XM-L2 LED and is powered by 1 x 18650 battery (not included). This headlamp has a nominal CCT 5000K, providing a warm, neutral light; the higher the Kelvin (K) the cooler the beam tint.

The H603d torch features three main brightness levels, each of which can be programmed to one of its two sub-levels. The second sub-level of each main level can be further programmed to different brightness levels.

Featuring a basic operating system for simple use of the head torch, one short-click of the switch turns on the light to High or turns off the light. Two short-click turns on the light to Medium and three short-click turns on the light to the beacon-strobe mode. Press and hold (for over 0.6 seconds) to turn on the light to Low and then Medium and High, simply releasing at the desired level.

Alternatively the advanced operation system can be used to configure and set the various lighting levels. Press and hold to cycle from Low, Medium and High, releasing at the desired level to set. When you press and hold, the light always cycles from Low to High regardless which level you are currently in. Double click the switch to toggle and select between the two sub-levels for that main level. Sub-level selections for the three main levels are memorised after the light is turned off and through battery changes.

The second sub-level (H2, M2 and L2) of each main level can be further programmed to different brightness levels. At a main level, double-click 6 times to start configuration. On subsequent double-clicks the light will cycle through different brightness levels. Short click to turn off the light when finishing configurations. The selections for the second sub-levels are memorised after the light is turned off and through battery changes.

Brightness Levels:
High: H1 900 lumens - 2 hrs runtime or H2 577 lumens - 2.5 hrs runtime / 263 lumens - 3.9 hrs runtime / 121 lumens - 11 hrs runtime
Mid: M1 64 lumens - 30 hrs runtime or M2 27 lumens - 66 hrs runtime / 9 lumens - 172 hrs runtime
Low: L1 2.7 lumens - 16 days runtime or L2 0.37 lumens - 2.5 months runtime / 0.05 lumens - 4.6 months runtime / 0.01 lumens - 5.5 months runtime

Plus Beacon and Strobe modes.

Includes: headband with rubber mounting, spare O rings