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Angled studio view of the black Acebeam P17 duty flashlight showing the textured handle knurling, removable pocket clip, and crenulated strike bezel.

Acebeam P17 Defender Flashlight

$109.95
Acebeam P17 Defender: 4,900 Lumens with Constant-Current Boost Regulation

Built around a highly efficient constant-current boost driver and a de-domed CREE XHP70.3 HI LED, the Acebeam P17 Defender delivers a flat-regulated 4,900-lumen burst paired with a verified 445 meters (486 yards) of clean throw. Engineered specifically for duty carry, its mechanical dual-tail switch interface provides instant, high-output control without the need to fumble with a side switch.

For First Responders
  • Intuitive UI: The mechanical dual-tail switch system gives you muscle-memory access to One-Touch Strobe and a 4,900-lumen Turbo burst straight from off. It completely eliminates user-interface confusion when operating under heavy stress.
  • Recoil & Impact Stabilization: Dual internal gold-plated springs keep the 21700 battery locked firmly in place, ensuring the circuit stays closed so the light won't flicker or shut down under hard impacts.
  • Crenellated Bezel: Features a hardened strike bezel embedded with 3 silicon nitride ceramic beads designed for emergency glass-breaking.
For Outdoorsmen & Search & Rescue
  • Flat Boost Regulation: Unlike cheaper linear or FET-heavy setups that experience sudden drops in brightness, the high-efficiency constant-current boost driver maintains a stable, flat output throughout the runtime cycle as the battery drains.
  • High-Candela Beam Profile: Utilizing a high-intensity (HI) de-domed emitter allows the P17 to punch out 49,506 cd of peak beam intensity. This throws a tightly focused hotspot to cut through dense brush and fog while retaining enough useful spill for spatial peripheral awareness.
  • Submersible Architecture: Fully dustproof and waterproof carrying an IP68 rating certified for submersions down to 1.5 meters (5 feet), ensuring continuous operational reliability during extreme storms.
For Flashlight Enthusiasts
  • Premium Component Efficiency: The P17 avoids cheap, inefficient configurations. Its boost driver yields excellent thermal management, high efficiency, and completely flicker-free output with zero PWM.
  • Clean XHP70.3 HI Beam: The choice of a de-domed CREE XHP70.3 HI emitter results in a uniform 6500K beam profile with significantly less tint-shift across the corona compared to standard domed CREE variants.
  • High-Drain 21700 Cell: Powered by an included high-capacity, USB-C rechargeable 5,100mAh 21700 Li-ion battery, striking an ideal form-factor balance between continuous high-drain capability and pocketable mass.
    FLASHLIGHT MODES

    Runtime & Output Specification

    Mode Lumen Output Runtime Beam Distance Beam Intensity
    Turbo ▼ 4900~1250~90 lm 40s + 1h 55min + 1h 445 m / 486.7 yards 49506 cd
    High ▼ 2200~1250~90 lm 6min + 1h 50min + 1h 312 m / 341.2 yards 24336 cd
    Medium ▼ 580~90 lm 5h 30min + 20min 172 m / 188.1 yards 7396 cd
    Low ▼ 90 lm 1d 12h 91 m / 99.5 yards 2070 cd
    Ultra-Low ▼ 3 lm 20d - -
    SOS ▼ 2000 lm 2h 30min - -
    Strobe ▼ 2000 lm 2h + 47min - -
    TECHNICAL SPECIFICATIONS

    Performance & Optics

    Peak Intensity 49506 cd
    Emitter Type 1x CREE XHP70.3 HI LED
    Color Temp / Profile 6500K Cool White
    CRI Rating Max Brightness (~70)
    Beam Pattern Hybrid Spot/Flood
    Moonlight Mode No

    Power & Electronics

    Battery Size 1x 21700 Li-ion
    Included Battery Capacity 5100 mAh
    Included Battery Discharge Rating 15 A
    Battery Contact Type Button-top
    Battery Protection Protected
    Standard Battery or Proprietary Battery Standard
    Charging Method USB-C (On-Battery Port)
    Driver Type Boost Driver (Step-Up)

    Physical Interface & Build

    Impact Resistance 1.5m (~5 ft)
    Water/Dustproof Rating IP68 (Dustproof and Submersible up to 2m for 30 min.)
    Switch Location Dual Tail Switch
    Switch Type Forward Clicky, Paddle Switch
    Instant Strobe Instant via Tail Function Switch
    Lockout Mode Yes
    Pocket Clip Two-Way Clip
    Bezel Style Crenellated with Glass Breaking Beads
    Length 147 mm / 5.8 in
    Head Diameter 41 mm / 1.6 in
    Tube Diameter 30 mm / 1.2 in
    Weight (with battery) 227 g / 8.0 oz
    MANUAL & ADDITIONAL MEDIA

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