Nearly every disposable locks you into one flavor from the first puff to the last. The Adjust MyFlavor 40K tries something different: two flavors inside one device, with a button that shifts the balance between them while you vape. It is a genuinely new idea for the category. Whether the execution lives up to it is a fair question, so this review covers how the feature works, what independent hands-on testing found, and who it actually suits.
How Flavor Mixing Works
The MyFlavor menu is built from eight flavor pairings rather than eight single flavors. Each device holds two e-liquids that were chosen to complement each other, and a three-level mixing control lets you lean toward one, sit in the middle, or lean toward the other. If a pairing were orange and strawberry, for example, you could run mostly orange, an even blend, or mostly strawberry, and switch between those with a button press mid-session. The idea is to fix the one-note problem that makes some disposables tiresome halfway through the tank.
Quick specs: 20mL total e-liquid capacity · 800mAh battery, USB-C charging with pass-through · Dual mesh coil · Normal Mode (up to 40,000 puffs) / Burst Mode (about 20,000 puffs) · 3-level flavor mixing · Fixed airflow · Smart digital screen · 5% nicotine · Draw-activated · 101.5 x 51 x 26.5mm, about 97g · $9.59
Two Buttons, Two Jobs: Mix and Burst
Two clicky buttons sit on the side of the device where a thumb naturally rests. The oval button controls the flavor mix, and the round button toggles Burst Mode, which adds heat and vapor at the cost of using battery and e-liquid faster, bringing the rating to about 20,000 puffs versus 40,000 in Normal Mode. Neither button fires the device. It is draw-activated, so you just inhale, and a press of either button briefly wakes the screen to show your status.
Before your first puff, peel off the QR-code sticker on the device. It covers the airflow opening, and the device will not activate while it is in place. That single sticker accounts for a lot of "it won't hit" complaints on new units.
The Draw: Airy in Normal, Tighter in Burst
Airflow on the MyFlavor is fixed, so there is no slider to tighten or loosen the pull. Independent testing found Normal Mode fairly airy and cool, closer to a direct-lung feel, while Burst Mode runs a little tighter with warmer vapor. That is worth knowing if you prefer a restricted, cigarette-like draw, because Burst Mode is the closer match and Normal Mode is not. If you are not sure which style suits you, our guide to MTL vs DTL vaping explains the difference.
The Screen and the Two-Liquid Readout
A smart digital screen shows battery level as cellular-style bars along the top, and because the device holds two liquids, it tracks them separately along the bottom with a row of color-coded dots matching each flavor. The screen has a dark background and does not glare, which is easy on the eyes in a dark room. One open question from the independent review: it is not clear what happens if one of the two flavors runs out before the other, so it is worth keeping an eye on those dots. Our guide on telling when a disposable is almost empty covers the other signs to watch for.
The Eight Flavor Pairings
The independent review documented eight pairings for this device: Blue Razz Ice, Mixed Mint, Orange Strawberry, Pineapple Ice Peach, Strawberry Banana, Tangerine White Gummy, Watermelon B-Pop, and Watermelon Mango Peach. Availability can vary, so choose from the flavor dropdown on the product page. Tasting notes from that reviewer were mixed. Orange Strawberry was the standout, a light strawberry with a bright, sweet orange. Mixed Mint was harder to appreciate as a mixing device, since peppermint and Miami mint are difficult to tell apart, and in Pineapple Ice Peach the pineapple came across as slightly funky and stronger than the peach.
- Fruit and candy: Orange Strawberry, Strawberry Banana, Tangerine White Gummy, Watermelon B-Pop
- Tropical and stone fruit: Pineapple Ice Peach, Watermelon Mango Peach
- Iced and mint: Blue Razz Ice, Mixed Mint
Flavor strength is the main criticism. That reviewer found the flavors light compared to other disposables, including other Adjust models, and attributed it to the loose airflow. If flavor is a subjective priority for you, slow draws and short pauses between puffs help on any device, which we cover in our guide to getting more flavor and bigger clouds.
Battery Life and Charging
The 800mAh battery charges over USB-C, and independent testing measured a full charge at about 95 minutes, which is slow. Pass-through charging is supported, so you can keep using the device while it charges. One charge lasted roughly a day of typical use, and a weigh-in test suggested about 2.5mL of e-liquid used per charge, which works out to roughly eight charges to empty the 20mL tank at that pace. Treat that as a rough guide rather than a spec, since your own usage will move it a lot.
How It Compares to Other Adjust 40K Devices
Adjust builds several 40K devices around a similar hardware platform, each with its own identity. The Adjust myRusher 40K is built around a high-intensity Rush Mode, and our Adjust MyCool 40K review covers the ice-focused sibling. The Adjust MySweet 40K rounds out the lineup on the sweeter side. If flavor strength is what you care about most, those single-flavor siblings are the safer starting point. The MyFlavor is the one to pick for the mixing concept itself.
Who Should Buy the Adjust MyFlavor 40K
It is worth a look if you
- Get bored of one flavor and want to shift the balance without swapping devices
- Prefer an airy, direct-lung style draw, especially in Normal Mode
- Like a comfortable duckbill mouthpiece and a screen that is easy on the eyes
- Want to try a new concept at a low price point
Consider a different Adjust model if you
- Want bold, punchy flavor above everything else
- Prefer a tight, restricted, cigarette-like draw
- Need a quick recharge, since 95 minutes is a long wait
Final Verdict
The Adjust MyFlavor 40K deserves credit for trying something the category rarely does, and the mixing control is simple to use. The independent testing behind this review was less enthusiastic about the results: light flavor, pairings that felt uninspired, loose airflow in Normal Mode, and a long charge time. Customer ratings on the product page are positive, at 93 percent across three reviews, though that is a small sample. At $9.59, it is a low-risk way to see whether flavor mixing appeals to you, but if strong flavor is the priority, a single-flavor Adjust model is the safer pick.
Frequently Asked Questions
How does flavor mixing work on the Adjust MyFlavor 40K?
Each device holds two flavors that were paired to complement each other. A dedicated button steps through three mix levels, from mostly the first flavor, to an even blend, to mostly the second flavor, and you can change the balance while you vape.
Do I have to press a button to fire the Adjust MyFlavor 40K?
No. The device is draw-activated, so you simply inhale on the mouthpiece. The two side buttons are for switching Burst mode and adjusting the flavor mix, not for firing. Remove the sticker that covers the airflow before your first puff, or the device will not activate.
Does the Adjust MyFlavor 40K have adjustable airflow?
No. Airflow is fixed. Independent testing found the draw fairly airy in Normal Mode and slightly tighter with warmer vapor in Burst Mode, so if you want a more restricted pull, Burst Mode is the closer fit.
How long does the Adjust MyFlavor 40K take to charge?
Independent testing measured a full charge at about 95 minutes over USB-C, which is on the slow side. The device supports pass-through charging, so you can keep vaping while it charges, and one charge lasted roughly a day of typical use.
WARNING: This product contains nicotine. Nicotine is an addictive chemical. Intended for adults 21+ only.
