Battery Type

• 4xAA
• Compatible battery (diameter/length)
• AA: (14-14.5mm/50-51mm)
• Pre-charged (low self-discharge) NiMH rechargeable AA, or High capacity rechargeable NiMH, or 1.5V lithium AA batteries are highly recommended.
• When using alkaline batteries, limit the time for MAX output as they are not designed for high drain device.
• Do not work with li-ion batteries

Operating voltage

• 2.7V - 7V

What's included

• SX30A4 flashlight
• Spare o-rings
• User Manual
• Mil-Spec Para-cord Lanyard w/ quick attachment clip
• Add-on diffuser filter with flip-cover feature
• Heavy duty nylon holster

Carrying method

• Para-cord lanyard with quick attachment clip
• Heavy duty nylon holster

Waterproof

• IPX-8 standard

Replaceable items

• Lens

Reflector

• Smooth aluminum reflector

Material

• HAIII hard anodization aerospace aluminum

LED

• CREE XHP35 HI E2 Cool White LED

Max output

• CREE XHP35 HI E2 Cool White LED
• LED lumen: 1870
• ANSI FL-14 lumen: 1427

• Center lux: 76,500 lux
• Center spot angle: x°
• Spill light angle: x°
• Beam distance: 603 yards / 553 meters

Lens

• Waterwhite glass lens w/ harden treatment
• Anti-reflective (AR) coating on both side (96% transparency)
• Multi-layers low color distortation A.R. coating on both side (98% transparency) to prevent reflections and color shadow over wider wavelength - Nichia 219 CRI92 only

LED circuit

• W1900 Pro - XHP35
• Offer current regulated MAX output with a single li-ion battery down to 3.0V (underload)
• MAX output slowly reduces after 3.0V and operates until 2.65V (underload)
• Built-in shut down voltage at 2.65V (underload) to prevent battery over-discharge leakage(user may restart at lower levels)
• Active thermal management feature (adjustment range 75%-100%)5
• Synchronous boost controller with ultra low resistance mosfet which offers up to 95% efficiency
• High switching frequency convertor for more compact circuitry design
• Non-dimming constant current regulation for all output levels without flicking
• Very low standby current (negligible)
• C3800 SC - Nichia 219C
• Ultra low dropout voltage for longer current regulated runtime
• Active thermal management feature5
• Low internal resistance design offers up to 99% efficiency
• High switching frequency (1MHz) controller for more compact circuitry design
• Non-dimming constant current regulation for all output levels without flicking
• Smart battery level report system
• Energy saving feature5
• Very low standby current (negligible)

Battery level report (discharging)

• A blue LED indicator under the main switch reports the estimated battery remaining capacity
• Flash once: lower than 20%
• Flash 3 times: 20%-50%
• Flash 3 times: 50%-80%
• Flash 4 times: higher than 80%

Battery Arrangement

• Innovative slot load design
• No battery tray or battery magazine needed
• Battery arragement design patent pending in United Status, Hong Kong, and China

Output and Runtime

• Five brightness levels
• Led lumen:
• XHP35 HI E2:
  18705-1270/760/330/121/16
• ANSI FL-1 lumen:
• XHP35 HI E2:
  14275-1020/617/268/98/12
• Runtime:
• 0.9-1.2/2.4/6.5/20/180 hrs  (4 x Sanayo Eneloop AA Pro 2450mAh)
• 0.7-1/1.8/5/15/140 hrs (4 x Sanayo Eneloop AA 1900mAh)
• 1-1.3/3/8.3/25/220 hrs (4 x Energizer Ulimate Lithium AA)
• 0.4-0.5/1.2/4.2/18/190 hrs (4 x Varta High Energy Type 4906 AA)
• 0.35-0.5/1.2/4.7/21/205 hrs (4 x Duracell Ultra power AA alkaline) 

• Optional disorienting strobe output

Operations

• Turn on the light at MAX output by pressing the BLACK button switch. Turn on the light at LOWEST output by pressing the WHITE button switch
• To turn off the light anytime, press and release the BLACK button switch.

• For MAX output momentary on, press and hold the BLACK button switch for immediate output.
• To switch between different brightness levels, press and release the WHITE button switch when the flashligh is on. 
  
  (For example: if you want to turn on the flashlight at the 3rd level, just press and release the white button switch three times from off.)
• To enter hidden auxiliary levels, cycle through two set of regular output brightness level to enter
• For instant MAX output - at any output level, press and hold the BLACK button switch. Release the button to return to previous level.
• For instant Strobe output - at any output level (even) off), double press and hold the BLACK button switch. Release the button to return to previous level (or off).
• Programmable startup level - Define the white button startup level by cycling to the desired output level and keep holding the white button for more than five seconds until the blue led indicator turns on.

Other features

• LED direct soldering on copper for maximum heatsink ability
• User replaceable glass lens
• Battery reverse polarity protection
• Ultra low internal resistance phosphor bronze springs (silver coated)
• Spring loaded positive and negative terminal