Zebralight H51c AA High CRI Headlamp

They Zebralight H51c and H51Fc are the High CRI versions of Zebralight's popular AA headlamps. They still have the same interface as all current Zebralight models, giving you instant access to all three modes from off. The H51Fc is the flood version, with a frosted lens that gives you a much more diffuse light.

Main Features and Specifications

• LED: Philips LUXEON Rebel (Typical CRI: 85, Norminal CCT: 4200K)
• User Selectable Levels: 3 main level (High, Medium and Low). Each main level can be configured to one of its two sub-levels. The second sub-level of the High can be further configured to different brightness levels or strobes.
• Light Output
  • High:         H1 130 Lm (0.9 hrs)   or    H2  63 Lm (2.4 hrs) / 80 Lm (1.7 hrs) / 4Hz Strobe
  • Medium:    M1  29 Lm (9 hrs)    or    M2     14 Lm (30 hrs)
  • Low:         L1   2.8 Lm (3 days)   or    L2   0.3 Lm (16 days)
  • Light output are out the front (OTF) values. Runtime tests are done using Sanyo 2000mAh Eneloop AA batteries.
  • The 130, 80, 29,14 and 2.8 Lumen output levels are current regulated. The 63 and 0.3 Lumen output levels are PWM generated.
• Operating Voltage Range: 0.7V - 2.5V
• Battery: One 1.5V AA (NiMH, lithium or alkaline). 14500 Li-ion batteries are not supported. Batteries are not included in the package.
• Parasitic Drain: Negligible (equivalent to 16 years)
• Beam Type
  
  • 80° spill beam spread
  • 11° (3.8 feet at 20 feet) hot spot
• Dimensions
  • Diameter: 0.90 inch (23 mm)
  • Length:    3.2 inch (81 mm)
• Weight
  • 1.2 oz (35.8 gram)
  • 2.2 oz (61.9 gram) with an Eneloop AA
  • 3.0 oz (84.9 gram) with an Eneloop AA and headband 
• Features
  • Electronic soft-touch switch, with a 200,000 cycle operating life
  • Smart user interface provides fast and easy access to all brightness levels
  • Precision machined unibody casing from premium grade Alcoa aluminum bar stock
  • Proprietary heat sinking design bonds the LED board directly to the unibody aluminum casing, providing unblocked thermal paths to over 94% of the surface area.
  • Durable natural hard anodized finish (Type III Class I)
  • SCHOTT ultra clear lens with anti-reflection coatings on both sides
  • Orange peel textured reflector
  • Glow In The Dark (GITD) silicone ring near the tail cap
  • Battery power can be locked out by slightly unscrewing the tailcap to prevent unwanted activations or parasitic drain
  • Waterproof to IPX8 (2 meters, 30 minutes)
    

Operations

This light has 3 main levels (High, Medium, and Low). Each main level can be configured to one of its two sub-levels. The second sub-level of the High can be further configured to different brightness levels or strobes.

• Basic Operation
  • Short click turns on the light to High or turns off the light.
  • Long click (press and hold for about 0.6 seconds) turns on the light to Low.
• Advanced Operation and Configuration 
  • Short click turns on the light to High. Short click again quickly to cycle from High to Medium, and Low.
  • Press and hold to cycle from Low to High, release to set. When press and hold, the light always cycle from Low to High regardless which level you are currently in.
  • Double click to toggle and select between the two sub-levels for that main level. Sub-level selections (except the strobe) for the 3 main levels are memorized after the light is turned off and through battery changes.
  • The second sub-level of the High can be configured after 6 double clicks. Double click (startng with the 7th) to cycle and select different brightness levels or strobes. Short click to turn off the light when finishing configurations. The selections for the second sub-level of the High are memorized after the light is turned off and through battery changes.

 

Accessories in the package

• Pocket clip
• One black silicone holder with headband
• One GITD silicone holder
• Two o-rings