During border security patrols, open water and maritime port facility surveillance, and wide-area rural search operations, conventional single-emitter flashlights often fail to provide massive lumen volume alongside a concentrated half-kilometer beam reach. LED flashlight, rechargeable 20W 5500Lm 5000K 4000mAh VIDEX VLF-A505C | black – 4 LED diodes and 500m beam distance is a flagship search and reconnaissance handheld spotlight incorporating a quad-emitter optical array. This engineering architecture generates a massive 5500-lumen collective output and projects light across distances up to 500 meters (half a kilometer), creating an intense optical wall for instantaneous target discrimination.

The optical assembly integrates four independent Luminus SST40 solid-state emitters housed within a deep multi-chamber CNC-machined aluminum reflector shielded by high-transmittance tempered glass. This multi-core geometry achieves a peak beam intensity of 20800 cd in Turbo mode, merging a piercing central spotlight with an expansive peripheral field for tactical perimeter security. Its 5000K neutral white daylight spectrum ensures accurate environmental rendering without bluish glare, substantially mitigating operator eye fatigue during extended nocturnal shifts. The internal digital driver delivers constant flicker-free current across the discharge cycle. An intelligent control interface provides a 0.5-second soft activation, automatic mode memory, emergency SOS activation (via a 3-second hold), and an electronic lockout against accidental pocket firing (via a rapid double-press verified by a double blink). Power is supplied by a replaceable Li-ion 21700 battery rated at 4000mAh (3.7V), with backward compatibility for 18650 cells via the included adapter sleeve. Recharging occurs via an onboard USB-C port under a heavy-duty weather cap supporting DC 5V, 2A fast charging in 2.5 hours. Battery reserve can be verified while the unit is off via a momentary button tap. The thick-walled aircraft-grade aluminum chassis with deep thermal dissipation fins achieves the IP68 standard (submersion up to 2 meters) and withstands 1-meter drop shocks.

Technical Specifications and Operating Parameters

• Physical Dimensions (mm): Overall length 144 mm, head width 49 mm, and body depth 26 mm with an operational chassis weight of 163 g (excluding battery) for commanding balance.
• Quad-Core Emitter Cluster: Four synchronized Luminus SST40 solid-state LEDs delivering 20W power and up to 5500Lm of calibrated Turbo flux.
• Half-Kilometer Beam Reach: Multi-chamber precision reflector produces 20800 cd of beam intensity reaching up to 500 m in open terrain.
• Neutral Daylight Spectrum: 5000K (neutral daylight white providing true-to-life surface rendering and terrain contrast without eye strain).
• Full Digital Output Stabilization: Electronic driver maintains stable luminous intensity across the complete battery discharge cycle without flicker.
• Turbo Mode Parameters: 5500Lm maximum output, 500 m throw, 20800 cd intensity, total cumulative runtime of 1h 30min (with thermal management).
• High Mode Parameters: 1200Lm output, 210 m throw, 10800 cd intensity, continuous operating runtime of 1h 40min.
• Middle Mode Parameters: 600Lm output, 160 m throw, 6400 cd intensity, continuous operating runtime of 3h.
• Low Mode Parameters: 220Lm output, 90 m throw, 2000 cd intensity, sustained field runtime of 9h 30min.
• Moon Power-Saving Profile: 30Lm output, 40 m throw, 380 cd intensity, maximum field autonomy up to 50h on a single charge.
• SOS Signaling Profile: 1200Lm optical distress beacon (10800 cd, 210 m reach) with active runtime up to 3h.
• Swappable Energy Reservoir: Standard Li-ion 21700 cell offering 4000mAh capacity (3.7V); includes sleeve adapter for 18650 cells.
• Rapid USB-C Interface: Onboard USB-C input terminal (DC 5V, 2A) completes battery replenishment in 2.5 hours under sealed protective cap.
• Multicolor Fuel Gauge: Battery status monitoring during operation and in off-state (solid green 100–80%, blinking green 79–50%, solid red 49–25%, blinking red 24–1%).
• Electronic Lockout Logic: Double-press safety command within 0.5s locks and unlocks the unit, confirmed by a dual flash.
• IP68 Ingress Certification: Complete dustproof barrier and waterproof sealing tested for continuous submersion down to 2 m depth; 1 m drop resistance.
• Package Deliverables: Flagship search torch, Li-ion 21700 battery, 18650 adapter sleeve, steel pocket clip, USB-C cable, and instruction manual.