The Ooze Duplex 2 jumps into the 510 Thread Battery scene with a lot more going on under the hood than your average vape stick. Most devices in this space, including reliable options like the Utillian 50, shine at their core function of powering 510 cartridges with multiple voltage settings. The Duplex 2 takes a different approach entirely by combining three distinct vaping modes in one device.
In our Ooze Duplex 2 review, we’ve tested the production unit extensively to evaluate how well it delivers on its promise of being a true all-in-one solution. And for our purposes, we will be considering this unit a 510 thread battery. However, users who want to see a more detailed comparison of this unit with top-performing devices in this category can find it on our Best 510 Thread Batteries ranking page. This page provides a comprehensive analysis of performance, features, and value across the leading models currently available in the market.
How It Works
When it comes to using the Ooze Duplex 2, you have three options. You can use it as a standard 510 battery for oil carts, attach the C-Core Onyx Atomizer for dabs, or convert it into a dab straw with the XL Nectar Tip.
We will primarily explain its use as a 510 thread battery, as that is what we found to work best with. Before using the Duplex 2, ensure the device is fully charged for longer sessions. The LED glows red during charging and turns green when full.
Here’s a step-by-step guide on how to use the Ooze Duplex 2:
Step 1: Screw on any compatible 510 cartridge
Step 2: Power On/Off. Click the fire button five times quickly (the LED will flash to confirm).
Step 3: Click three times to cycle through preset voltages.
Step 4: Double-click to initiate a 10-second pre heat.
Step 5: Just inhale for auto-draw hits.
If you want to use it as a Dab Pen, unscrew the bottom magnetic cover and attach the Onyx Atomizer to the 510 thread. Load a small amount of concentrate directly into the azul ceramic dish inside the atomizer. Hold the button for one to two seconds to preheat the dish. Then inhale while continuing to hold the button for full manual control.
That’s it! The variable voltage puts you in control of flavor or vapor, while the preheat ensures smooth starts. You can adjust the airflow by covering the bottom hole in the silicone cover with your finger. You can also use it as a carb cap and remove the finger to clear the vapor.
Manufacturing Quality
The Ooze Duplex 2 keeps a good balance between solid construction and functional design, especially for a multi-use vaporizer. The metal body feels durable in hand, and the mouthpiece locks in securely without any looseness. On a flat surface, it is helpful when you’re dabbing and you don’t feel any awkward tipping like you’d get with slimmer dab pens. Suppose you’re more focused on performance for wax specifically. In that case, you might also want to check our Best Dab Pens ranking page, which breaks down top-tier wax pens.
One of the more thoughtful design choices is the magnetic side panel, which gives quick access to the LED indicators and tactile trigger button. The C-Core “Azul” ceramic coils are another highlight. If you’ve ever wrestled with rebuildable atomizers and tiny screws, you’ll appreciate how refreshingly simple this is.
The plastic mouthpiece might not scream luxury, but it’s practical. A quick quarter-turn reveals the built-in carb cap underneath, and covering that bottom hole gives you reasonable control over airflow. The tech features are genuinely useful too. The IntelliThread Technology automatically recognizes whether you’ve attached a cartridge, Onyx Atomizer, or XL tip, while the Pulse Wave Technology provides a gentle vibration to confirm everything is connected properly.
That said, there are a few areas where you can feel the difference between this and premium devices. The quarter-turn mechanism works fine, but it lacks the precision threading found in premium 510-thread batteries, such as the Zeus ION, which features a gold finish and tighter tolerances. The Duplex 2 leans more into function and adaptability than style. As a multi-use device, the stable base design of Duplex 2 proves particularly practical for dab sessions along with oil cartridges, where upright positioning prevents extract leakage.
Temperature Flexibility
The Ooze Duplex 2 offers four voltage settings that cover the essential range for most vaping preferences:
2.7 Volts – Green LED
3.2 Volts – Blue LED
3.7 Volts – Yellow LED
4.2 Volts – Red LED
Lower voltages are ideal for those who want to extract the most flavor from their concentrates, especially when using live resin or terp-heavy waxes. The higher voltage settings are better suited for users looking to extract the maximum amount of vapor output from their cartridge or dab load. For most sessions, these settings are sufficient to achieve satisfactory results. Whether you’re using a 510 cartridge or the Onyx Atomizer, the voltage levels provide a clear way to tailor your session.
While this approach works well for users who prefer simplicity, there’s a slight limitation for users who like more granular control. Some smaller 510 batteries like the Tronian Rhotron Pro now offer precise voltage adjustment in 0.1V steps and display real-time voltage or session data on an LED screen. Those tiny displays with plus/minus buttons take the guesswork out of fine-tuning and let you adjust down to your preferred decimal.
The Duplex 2 takes a simpler route, favoring a streamlined experience over granular adjustment. It may not let you tweak in tenths of a volt, but the four-level setup works well in practice, especially with the IntelliThread system optimizing output based on the attachment. Once you know your sweet spot, you can jump in quickly and stay consistent.
Battery Life
The Ooze Duplex 2 has a built-in 900mAh battery that delivers a solid balance of power and convenience, especially considering its compact size. On a full charge, you can expect anywhere from 6 to 9 sessions, depending on your voltage setting and how long you draw. For casual or moderate use, this will comfortably get you through most of the day without the need to recharge.
It takes up to 2 hours to charge the device fully, thanks to the USB-C port, which is quickly becoming the standard for faster and more efficient charging. It’s a welcome upgrade for anyone used to slower micro-USB connections. The device also supports pass-through charging, so you can keep your session going even while it’s plugged in.
Some smaller 510 batteries on the market push higher capacities or come with swappable battery options, which can offer longer runtime if you’re constantly on the go. Still, the Duplex 2 holds its own well, especially with the LED battery indicators that make it easy to keep tabs on power levels at a glance.
While it might not be built for back-to-back marathon sessions, the Duplex 2’s battery life is more than enough for daily concentrate or cart users looking for a dependable, quick-charging companion.
Portability
Compact and ergonomically designed, the Ooze Duplex 2 is ideal for on-the-go use. Its sleek, minimalist body is easy to carry and stylish to display. The unit features a clearly visible Ooze logo, positioned tactically for optimal brand visibility. The tactile buttons are conveniently placed for easy operation, and a color-coded LED window near the base provides a quick glance at settings and battery life.
Some compact 510-thread batteries like the LITL Sneaky focus purely on ultra-lightweight portability, keeping the footprint as minimal as possible. That style tends to favor auto-draw activation and tight dimensions, which makes them ideal for slipping into a small pocket and using without drawing attention. The Duplex 2, while still travel-friendly, leans slightly more into function.
The slightly larger size allows for a more comfortable grip, and the tactile trigger button and visible LED window are thoughtfully positioned, giving users a little more control and feedback during use without sacrificing stealth.
Overall Experience
The Ooze Duplex 2 successfully delivers on its promise of being a versatile all-in-one vaping solution, though it comes with the trade-offs you’d expect from a multi-function 510 thread battery. With the included C-Core Onyx Atomizer and XL Nectar Tip, it’s designed for users who want a bit more freedom in their vaping experience. It doesn’t chase maxed-out specs or a flashy display, but instead delivers a consistent, tactile experience with intuitive feedback.
While the four-voltage system lacks the precision control found in some competitors, it effectively covers the essential range. For users prioritizing ultra-compact portability and budget-friendly options, devices like the LITL BIT might be more appealing. Still, the Duplex 2’s stable base design and multi-mode functionality justify its slightly larger footprint.
Those who require precise voltage tuning or swappable coils may feel slightly limited, but in day-to-day use, the Duplex 2 remains intuitive and consistent. For users seeking a comprehensive comparison of how the Duplex 2 stacks up against other leading options, our Best 510 Thread Batteries ranking page provides detailed analysis of performance, features, and value across the top devices in today’s market.
Overall, this is a pretty unique vape that gives users the freedom to choose however they want to vape, wherever they want to vape at. It gets the job done, and for that, we commend it.
Thank you for reading the OOZE Duplex 2 review. As always, keep vaping!
