Up Close: Streamlight SL-SideSaddle Hat Light

A compact, unobtrusive lighting system designed to mount onto hats, hard hats, and helmets.
Feb. 9, 2026
2 min read

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Application

The Streamlight SL-SideSaddle is built for everyday use in the shop, giving techs reliable lighting for diagnostics, repairs, and service where a traditional work light won’t fit. Its handsfree, line-of-sight beam makes it especially useful for under-the-hood work, wiring, and tight-space visibility. The rear safety LED provides added awareness around moving vehicles and equipment. Technicians have two options available for the SL-SideSaddle, a rechargeable USB (61627) or alkaline (61626) version. The alkaline version includes three AAA batteries and a hat mount, while the USB verson includes one polymer battery, a USB-C cord, and a hat mount. 

Origin

The SL-SideSaddle was developed to create a powerful, low-profile lighting solution that improves visibility, boosts safety, and keeps both hands free for precision work. 

Features and benefits

The SL-SideSaddle provides bright, directional light exactly where the technician looks, eliminating the need to hold a flashlight or prop one under a hood. This frees both hands for work, improving visibility and speeding up diagnostics and repairs. Mode memory means techs can resume work quickly without cycling through settings. 

Manufacturing/engineering specifications

  • Battery options: USB-C rechargeable lithium polymer or AAA alkaline models
  • Lumens
    • USB: Up to 400 lm
    • AAA: Up to 300 lm
  • Run-time
    • USB: Up to 12 hours on Low
    • AAA: Up to 16 hours on Low
  • Beam options: Spot, flood, spot/flood combo
  • Safety light: Rear blue LED for visibility
  • Housing: High-impact polycarbonate thermoplastic body, unbreakable lens
  • Durability: IPX7-rated design; waterproof to 1 meter for 30 minutes; all openings O-ring sealed; 2-meter impact resistance tested
  • Weight
    • USB: 3.1 oz
    • AAA: 3.4 oz
  • Size
    • USB: 3" length by 1.72" width by 1.14" height
    • AAA: 3" length by 2.25" width by 1.14" height
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