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Product Discontinued by Manufacturer
Nitecore SRT3 Defender Light, 550 Lumens has been discontinued by Nitecore and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Flashlights, Survival Gear yourself to try and find the perfect replacement for you!
Product Info for Nitecore SRT3 Defender Light, 550 Lumens
The simple and highly intuitive interface of the Nitecore SRT3 Defender 550 Lumen Flashlight was designed with professional and tactical users in mind. Also works well for personal defense and outdoor recreational use. Features 4 special operation modes: strobe mode for emergency signaling or as a defensive tool, SOS mode for an internationally recognized distress signal, police warning light with alternating red and blue lights, or location beacon ultra-efficient flashing mode that prevents losing in the dark. In single-color operation, red light is often used to save vision on low-light applications such as tactical operations, hunting and general outdoor use. Blue light is often used for blood and stain detection, fishing and hunting. Diminutive and ergonomic, the Nitecore SRT3 Defender 550 Lumen Flashlight easily slips into a pocket, making it the perfect everyday carry flashlight.![]()
Specifications for Nitecore SRT3 Defender 550 Lumen Flashlight:
| Max Output: | 550 lumens |
| Max Beam Distance: | 134m |
| Max Beam Intensity: | 4500 cd |
| Special Operation Modes: | Strobe, SOS, Police Warning Light, Location Beacon |
| Run time: | 45 minutes to 200 hours, depending on usage |
| LED: | CREE XM-L2 T6 |
| Reflector: | SMO |
| Battery: | 1 × 14500, 1 × AA, 1 × CR123, or 1 × RCR123 |
| Beam color: | White light |
| Length: | 100 mm / 3.94 in |
| Head Size: | 25.4 mm / 1 in |
| Weight: | 73 g / 2.57 oz |
Features of Nitecore SRT3 Defender 550 Lumen Flashlight:
- Third Generation Smart Selector Ring technology offers smooth rotation for brightness adjustment and incremental rotation for function selection.
- Second Generation CREE XM-L (XM-L2 T6) LED provides 10 to 15 percent higher efficiency.
- Second Generation Crystal Coating Technology along with Precision Digital Optics Technology combine to provide excellent reflector performance.
- Toughened ultra-clear mineral glass with double-sided anti-reflective coating ensures the highest optical efficiency and light transmittance.
- Infinite brightness adjustment from 0.1 to 550 lumens.
- 6 rapidly switchable functions to select from.
- High efficiency circuit board provides up to 200 hours runtime on lowest output level.
- Reverse polarity protection prevents damage from incorrectly inserted batteries.
- Included body extender allows the use of a single AA battery as a cost-effective alternative.
- Knurled body for sure grip.
- Stainless steel titanium-plated clip
- Stainless steel retaining ring protects core components from damage.
- Stainless steel window breaker, designed to work in emergency situations.
- Constructed from aero grade aluminum alloy.
- Robust HAIII military grade hard anodized
- Waterproof in accordance with IPX-8 (2 meters submersible)
- Impact resistance to 1.5 meters
- Tail stand capability
Package Contents:
- Nitecore SRT3 Defender 550 Lumen Flashlight
- Black nylon belt holster
- Detachable pocket clip
- AA body extension tube
- Lanyard
- Spare tail cap button
- Spare O-ring
Related Products to Nitecore SRT3 Defender Light, 550 Lumens
Nitecore SRT3 Defender Light, 550 Lumens Unavailable & Discontinued Models
List of Unorderable Models
- Nitecore SRT3 Defender Light, 550 Lumens NCSRT3 , MPN: SRT3 BLACK , UPC: 6952506400942 , Code: 3N-FL-NCSRT3



























































