Streamlight 66318 Microstream Waterproof Aluminum Super Bright Keychain Light with Battery-Booster Electronics

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List Price: $28.56

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About Streamlight

Compact and lightweight, the Streamlight MicroStream is a portable penlight with a super-bright, high-flux LED that lasts up to 30,000 hours. Featuring a tail-cap switch for single-handed operation and durable and water-resistant materials for use in extreme conditions, the Streamlight MicroStream Penlight is ideal for daily use at home or at work.

Streamlight Features

  • Proprietary Micro Optical System (MOS), for optimized output and runtime
  • Battery-Booster" electronics to provide a super-bright beam
  • An internal polymer body liner and shock proof switch housing allow for operation under the most extreme conditions
  • O-Ring Sealed, shock proof and drop tested construction
  • Corrosion and water resistant construction
  • High Strength "Break Away" safety lanyard
  • Unbreakable pocket clip
  • Up to 20 lumens output for up to 1.5 hrs runtime
  • Super-bright 1/2 watt, 30,000 hour high flux LED

Streamlight Specifications

Case Material
Type II MIL-SPEC abrasion and corrosion-resistant anodized aircraft aluminum
Light Source
0.5 Watt High-Flux LED; 30,000 hours rated LED life
Light Output
Up to 20 Lumens Typical
Push Button Tail switch
Run Time
Up to 1.5 hours of regulated runtime
1 "AAA" alkaline battery
Dimensions (L x Diameter)
3.5" x 0.6" / 90mm x 15mm
1.04oz / 29.7g with battery
Mfr #

Reviews about this item

Reviewed by 1 customers


Great Service and Price


from Milwaukie, OR  -  Casual/ Recreational

I love the flashlight. Fits easily in any pocket or on a keychain. It is the brightest flashlight I have ever owned and runs on a single AAA cell. It is so good I bought another one.

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