Manufacturer: Nitecore
LED: 19 x CREE XP-L2 LEDs
Reflector: SMO
Lens: Toughened ultra-clear mineral glass
Peak Beam Distance: 290 m
Peak Beam Intensity: 22200 cd
IP Rating: IP68 - 2m submersible
Impact Resistance: 1 m
Dimensions: L-5.73"xW-1.97"xH-1.97"
Weight: 14.89oz

Pros:

• USB-C Quick Charging
• CNC Machined Unibody Design
• Strobe, Spotlight, and Floodlight modes
• Ambidextrous tactical buttons
• Lockable to prevent accidental usage
• Optical lenses with double sided scratch resistant coating
• Integrated Advanced Temperature Regulation
• Interchangeable STROBE READYTM and Turbo Ready IM settings
• STROBE Mode uses randomly changing frequencies for stronger dizzying effects
• Highly efficient constant current circuit provides stable output up to 13 hours
• HA II military grade hard-anodized finish
• Waterproof and dustproof rating in accordance with IP68 (2 meters submersible)
• Impact resistant to 1 meter
• Tail stand capability

Cons:

• Modes/Brightness Output: Turbo (20000 Lumens.--), High (3100 lumen/45min), Mid (1900 lumen/1hr45min), Low (1050 lumen/4hr15min), Ultralow (320 Lumens/13hrs), Spotlight (1200 Lumens/3hrs30min, Floodlight (1800 Lumens/2hrs), Strobe (20000 lumens/--)
• Built-in 2 x 21700 rechargeable Lion batteries (9 600mAh in total)

Comments: Despite its compact handheld size, the TM20K is considered the brightest one of the Tiny Monster series thanks to its new technology and improved design. Nitecore have crammed 19 LEDs into a single model, 1 big reflector in the middle for throw, surrounded by 18 for flood, which enable it to deliver a powerful 20,000 lumen output, reaching up to 317 yards of the darkness.  The light speaks no less in terms of durability as well. The TM20K features a robust CNC machined unibody design with IP68 certification (2m submersible) and an impact resistance of 1 meter.  It is powered by 2 internal batteries in 4800mAh 21700 formats with over 6 light levels over the Turbo and the Strobe with a maximum autonomy of 13 hours enough to get you going all day long.  For managing levels, you have 3 push button switches and 1 toggle switch that can be used one-handedly as well as mode of use or lock.