Nitecore Tiny Monster TM 20K Ultra-Compact High-Performance Flashlight. The Nitecore Tiny Monster TM20K is an extremely powerful, compact flashlight from the Tiny Monster series, ideal for tactical operations, search and rescue, outdoor activities, or industrial applications. With impressive brightness and innovative operation, it sets standards in its class. Technical Highlights: Luminous flux: Up to 20,000 lumens, with 19 CREE XP-L2 LEDs, for a maximum beam distance of 290 m and 21,000 candela. Brightness levels: 7 brightness levels plus strobe: Turbo: 20,000 lumens (burst, only when the switch is pressed) High: 3,100 lumens (approx. 45 min.) Mid: 1,900 lumens (approx. 1 hr 45 min.) Low: 1,050 lumens (approx. 4 hrs 15 min.) Ultralow: 320 lumens (approx. 13 hrs.) Spotlight: 1,200 lumens (approx. 3 hrs 30 min.) Floodlight: 1,800 lumens (approx. 2 hrs.) Strobe: 20,000 lumens. Battery: Integrated 2x 21700 Li-ion batteries (9,600 mAh), rechargeable via USB-C port (approx. 4.5 hrs. with Quick Charge). Operation: Dual-switch design with ambidextrous tactical buttons: Toggle switch for mode selection (Lockout, Daily, Tactical). Large dual buttons for Turbo (instant access), Strobe, and brightness levels. Strobe Ready and Turbo Ready functions. Design: Dustproof and waterproof aluminum housing (IP68, submersible to 2 m, drop-proof to 1 m), black anodized (145.5 x 50 x 26 mm, 422 g). CNC-machined unibody design with cooling fins for excellent heat dissipation. Includes magnetic holster, lanyard, deep-carry clip, and USB-C cable. Advanced Temperature Regulation (ATR) protects against overheating. Special Features: Beam: Combines flood and spot modes for flexible illumination (spotlight for focused range, floodlight for wide areas). Turbo mode produces an intense flood of light, ideal for search or self-defense. Users praise: "20,000 lumens turn night into day!" Handling: Compact for one-handed operation, fits in a pocket. Intuitive but complex controls with four metal switches; very efficient after familiarization. The toggle switch prevents accidental activation, but the controls may initially seem confusing to beginners. Versatility: Suitable for outdoor activities, rescue operations, industrial or tactical applications. A quick-charge USB-C port and robust construction make it reliable. Criticism: Turbo mode only available in burst mode, and the focus is more on floodlighting than extreme throw. The Nitecore Tiny Monster TM20K is ideal for users looking for a compact, extremely bright flashlight with versatile modes and tactical features.