Nitecore Tiny Monster TM9K PRO Tactical High-Performance Flashlight. The Nitecore TM9K PRO is a compact, high-performance LED flashlight from the Tiny Monster series, ideal for tactical operations, self-defense, outdoor adventures, and professional applications. Featuring innovative LED technology and intuitive operation, it offers impressive brightness and versatility. Technical Highlights: Luminous Flux: Up to 9,900 lumens, with 3x NiteLab UHi 40 MAX LEDs (9 cores each: 1 central throw LED, 8 surrounding flood LEDs), for a maximum beam distance of 510 m and 65,000 candela. Brightness Levels: 6 modes (4 brightness levels + 2 special modes): Lumin Shield (floodlight): 9,900 lumens (momentary mode). Search (searchlight): 6,000 lumens (momentary mode, 510 m beam distance). High: 2,000 lumens (approx. 3 hours, 320 m). Mid: 500 lumens (approx. 4 hours). Low: 130 lumens (approx. 17 hours). Ultralow: 30 lumens (approx. 65 hours). Battery: Integrated 21700 Li-ion battery (5,000 mAh, non-replaceable), rechargeable via USB-C port (18 W Quick Charge, approx. 1 hour 45 minutes for 80%). Battery level indicator via LED on the tail cap. Operation: Two tail switches: Main switch: On/Off and brightness cycle (Ultralow, Low, Mid, High). Mode switch: Direct access to Lumin Shield (press and hold) or Search (double press). Two lockout modes: Half (access to special modes) and Full (complete lock). Design: Dustproof and waterproof housing made of aircraft-grade aluminum (IP68, submersible to 2 m, drop-proof to 1 m), black hard-anodized (133 x 40 x 26 mm, 227 g with battery). Includes holster, belt clip, lanyard, and USB-C cable. Sensor protection reduces brightness when obstacles are present to prevent overheating. Advanced Temperature Regulation (ATR) protects against overheating. Special features: Beam: Lumin Shield creates a wide beam (9,900 lumens) for disorientation or room illumination; Search mode provides a focused beam (6,000 lumens, 510 m). High mode combines flood and spot beams, while lower modes primarily utilize the throw LED. The beam is uniform with a neutral color temperature (approx. 5600K, low CRI). Users praise: "Enormous brightness in a compact form, perfect for tactical scenarios!" Handling: Ergonomic and lightweight, ideal for EDC or tactical use. Intuitive dual-switch operation, but momentary modes (Lumin Shield/Search) cannot be permanently activated. The lockout protection is reliable, but the lack of a replaceable battery is a drawback. Versatility: Optimal for self-defense, search and rescue, outdoor activities, or professional use. The robust construction and IP68 certification make it suitable for harsh conditions. Criticisms: Short runtime in high modes and no USB Power Delivery. Compatible with weapon mounts for tactical applications. The Nitecore TM9K PRO is ideal for users seeking a compact, extremely bright flashlight with tactical features, innovative LED technology, and reliable performance.