ARE YOU A PRO? Join for FREE!The JETBeam KO-03 is the next generation in the KO series of flashlights. The KO-03 is an upgrade from the very popular JETBeam KO-02 V2, now with a Luminus SST-70 LED, longer run times and more functionality. With almost the exact same body design, this light puts out 400 more lumens and lasts over 200 hours longer than its predecessor.
The KO-03 is gives users multiple fuel options for their convenience. The package includes a JETBeam 21700 li-ion battery, but can also be powered by 1 x 20700 or 1 x 18650 batteries. When using li-ion batteries, the KO-03 has the unique feature of providing a power bank function with the discharge of the battery. Charge up essential electronics in a pinch with the flashlight already in use.
To ensure ultimate efficiency in different environments and work places, the KO-03 has a flat, magnetic tailcap. Use this light on flat floors or surfaces for tail stand lighting when broader lighting is needed. Attach the KO-03 to metal surfaces with its powerful magnetic tail for a hands-free lighting device - often needed in power outages, auto emergencies and utility work.
| Turbo | High | Med | Low | Eco | Strobe | |
| Brightness | 2,400lumens | 1,100lumens | 300lumens | 65lumens | 6lumens | 1,200lumens |
|---|---|---|---|---|---|---|
| Runtime | 3.5hours | 4.5hours | 8.8hours | 37hours | 350hours | 5.2hours |
| Brand | JETBeam |
| SKU | JETBEAM-KO-03 |
| Series | KO |
| UPC | 6957883865551 |
| Primary Material | Aluminum Alloy |
| Max Lumens (lm) | 2400 |
| Max Throw (m) | 326 |
| Rechargeable | Yes |
| Batteries Included? | Yes |
| Switch | Body |
| Length | 5.3 in (135 mm) |
| Typical Uses | Camping, Hiking, Household, Walking, Work |
| In the Box | Batteries, Lanyard, Spare O-ring(s), USB Cable, User Manual |
| Drop Resistance | 3.28 ft (1 m) |
| Switch | Body |
| Primary Material | Aluminum Alloy |
| Secondary Material | Anodized Aluminum |
| Max Lumens | 2400 |
| Max Throw | 326 m (1069 ft) |
| Batteries Included? | Yes |
| Included Model | JETBEAM-HL51 |
| Rechargeable | Yes |
| Charge Style | In-Body Rechargeable |
| Charge Connector | USB-C |
| Length | 5.3 in (135 mm) |
| Head Diameter | 1.35 in (34 mm) |
| Body Diameter | 1.01 in (26 mm) |
| Weight | 4.33 oz (123 g) |
| Certifications/Standards | ANSI |
| Country Of Origin | China |
| HTS Code | 85131020 |
| Length | 5.3 in |
| Width | 1.4 in |
| Height | 1 in |
| Shipping Weight | 0.57 lb |
| Packaging | Boxed |
| Warranty |
JETBeam 2 Year Warranty Battery Junction Warranty |
| Return Policy | Return Policy |
| Glossary | Flashlight Glossary |
Overall rating: 4.428571 / 5 from 7 reviews.
Review topics: [].
"Size is nice and small for running a 21700 battery. UA easy and understandable. I have mostly 18650 lights but this is the only 21700 due to it's small size. As with other Jetbeams it is a great mix of flood and spot due to orange peel reflector. Wish I would have bought 2."
"This is very bright Great size and feels great in the handle. Only thing I’d like to see is a pocket clip or a larger lanyard ring."
"This is my 2nd. KO-03 and I love the light. Does exactly what I want in an everyday carry. Except for wanting to turn on in your pocket because of switch level I couldn't be happier."
"My daughter bought this for me, I keep it with me in the car and it's saved me multiple times now. Once when I was waiting for a tow and my phone was dying. I forgot I had a charger right there in my flashlight! Thank god. It's nice and compact so it doesn't take up too much room, but let me tell you it is still BRIGHT."
"This JETBeam KO-03 is one of the best flashlights I've ever owned. It is rated at 2400 lumens but outshines other supposed higher lumen lights I have. The reason is that it remains at that output level for a far longer number of minutes. Even at the next lower output level the KO-03 remains brighter for longer than my other lights. The only reason I give it four stars instead of five is the absence of a tail switch. That being said the design of this flashlight is more compact and streamlined. Yes, batteries for the better performance cost more than twice as much but the performance levels make it worth the extra $$$."
"Nice, Bright Light, Power Bank Function only 0. 5 amps. It will do in a Pinch, but Not FAST like JETBeam says! Overall I like the light. I just think it's Overpriced for what you get. I have bought Way Better Quality Nitecore light for the same price. I would send it back but I'll have to pay return shipping and a 15% Restocking fee. Might as well keep it. Live and learn I guess! None of this is Battery Junction's Fault. JETBeam should Up The Amps on the Power Bank Function to at least 1 Amp! And Lower the Price."
"Love the look, feel, and performance of this quality flashlight."
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