Klarus RS20 - 1050 Lumens

Retail: $142.95
You Save: $78.45 (54.9%)


This 3-in-1 flashlight combines a primary LED with several side-mounted LEDs to combine long throw capabilities of a flashlight with those bike and lantern light with a diffused short-ranged flood light. With a 1050-lumen primary output thanks to its CREE XM-L2-U2 LED, the RS20 can shine a beam of light to a maximum of 316 meters ahead, while LEDs on the side can display blue, green, red and white light to provide a number of options for close-range lighting, serving as an area light or lantern for hands-free operation, and the patented side LED also boasts both a green flash mode and a red SOS signal that can serve double-duty as a danger or caution light.

Designed with a patented quick-release magnetic connector and a USB charging cable with integrated short-circuit protection, the RS20 can be ready to go whenever you need it, making it an ideal choice for rapid response situations. With a newly-redesigned ergonomic design that makes the light easy to operate one handed, the switches of the RS20 can be located easily even in complete darkness. With a stainless steel bezel ring to safeguard the core of the device from damage and with an IPX-8 waterproof rating to 2 meters, the RS20 is rugged, tough, and powerful enough for anyone's needs. Battery included.


  • Combines a primary LED with multi-colored side LEDs to give a 3-in-1 flashlight, lantern and bike light with a long throw beam and diffused flood
  • Uses a CREE XM-L2 U2 LED as the primary LED which delivers a maximum of 1050 lumens
  • Has a reflector that throws the beam a maximum of 316 meters
  • Has a patented sidelight LED with White, Red, Green, and Blue light to produce a diffused flood for close-up lighting
  • The primary White side LED uses a CREE XP-G2 R5
  • Can be used as a lantern or area light for hands-free illumination
  • Primary LED features 4 brightness levels:
    • High (1050 lumens) - 2.7 hour runtime
    • Medium (330 lumens) - 7 hour runtime
    • Low (10 lumens) - 110 hour runtime
    • Moonlight (1 lumen) - 982 hour runtime
  • Side White LED features 2 brightness levels:
    • High (200 lumens) - 2.9 hour runtime
    • Low (65 lumens) - 75 hour runtime
  • The side LED also has a red SOS function and a green Flash mode
  • The red SOS signal is the international standard rescue signal, but can be used to signal caution or danger
  • The green flashing mode can be used as a location beacon
  • Has a specially designed magnetic connection USB charging cable which can be removed quickly and safely
  • Has an ergonomic design for easy one-handed operation with switches that are easy to locate in the dark
  • The flashlight charger uses a standard USB charging port and provides intelligent charging function that adjusts the charging current according to the output form the USB to give the flashlight self-protection.
  • Has a crenelated Stainless Steel bezel ring protects the core components from damage
  • Has a user memory function
  • Is impact resistant up to 1 meter
  • Is waterproof up to IPX-8 standard (submersible up to 2 meters)
  • Has a 5 year Klarus warranty

Included Accessories:

  • One rechargeable Klarus Custom 18650 Lithium-Ion battery
  • One holster
  • One lanyard
  • One USB charging cable
  • One spare O-ring

• LED: Primary LED uses CREE XM-L2 U2 1A (6000K); Side LED uses CREE XM-L

• 4 output levels plus 2 flashing with primary LED, and 5 output levels, 4 colors light, plus 3 flashing with side LED

• Working Voltage: 3.0V - 8.4V

• Compatibility Battery: 2x CR123A / 1x 18650 (any 18650 battery with PCB protection), and supplied custom 18650

*Warning: Please ONLY use KLARUS custom 18650 battery for recharging, any 18650 battery with PCB protection or CR123A battery may be used in emergency,but cannot be recharged, you must take out the non-approved rechargeable battery to recharge it. (And do not use 16340 battery!)

• Charging: Input: 5 V; Output 4.2V/1000 mA Max

• Charging time: up to 4.5 hours

• Body color: Dark grey

• Reflector: Smooth reflector for primary LED

• Lens: Toughened ultra-clear glass

• Dimensions: 176mm (Length) x 25.4mm (Body) x 45.3mm (Head)

• Net weight: 190g (Excluding battery)

Overall Customer Rating of 2 Reviews:
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Close to perfect

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I bought two of these.3rd best flash light I have ever owned and I have used and owned the very best. Reason for not giving it 5 stars is one won't charge.


FlashlightZ Review - Klarus RS20

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This is a great light if you are looking for something that has a TON of functionality. Its over 1000 lumens and a pretty tight beam pattern, which gives it some good distance. The lantern on the side is great for utility type use or as a flood for close up viewing. It also has green/red/blue LEDs for map-reading/emergency signalling/hunting.