Most sour disposables lock in one level of tartness from the first puff to the last. The Adjust MySour 40K adds a control: press a button to move through four sour levels, from a light tickle to an overload, and change how a flavor tastes on the fly. This review covers how the sour control works, how it ties into the power levels, what the five flavors are like, and the one catch worth knowing before you buy. You can find the device on the Adjust MySour 40K product page, or browse the full Adjust vapes collection.
A note on sources: the specifications come from the ivape.shop product listing. The hands-on observations, meaning the feel of the draw, flavor notes, battery life, and charge time, come from an independent hands-on review published in March 2025, not from testing at ivape.shop. They reflect one reviewer's experience.
The 30-Second Verdict
- What it is: a rechargeable disposable rated for up to 40,000 puffs with a four-level sour control.
- Standout features: adjustable sourness, three power levels, a triple mesh coil, and a screen.
- Best for: mouth-to-lung vapers who like sour candy flavors and want to tune them.
- The catch: a charge took about 100 minutes in the independent review.
How the Sour Control Works
A button on the side of the device cycles through four sour levels, and the screen shows which one you have selected. The product listing names them from mildest to strongest:
- Sour Tickle: a gentle tartness for everyday use
- Sour Vibes: a balance of sweet and tang
- Sour Rush: a stronger kick
- Sour Overload: bold, intense tartness
The listing suggests trying the same flavor at different levels, since your preference can change. The sour setting does not change the nicotine strength, which stays at 5% (50mg) on every level. The available materials also do not explain how the device achieves the adjustment, so treat it as a feature to try rather than one you can reason out from the specs.
Sourness Also Changes the Power
This is the finding that makes the MySour more interesting than a simple flavor tweak. The independent reviewer found that raising the sourness level also raised warmth, vapor production, and flavor intensity. At the lowest power level with the mildest sour setting, vapor was faint, and adding sourness fixed it. The reviewer could not say why the sour setting affects power and listed it as an open question.
The practical takeaway is that you have two dials for intensity instead of one. If a flavor feels thin, try adding sourness before moving the power slider. If it feels too heavy, take a level off.
Three Power Levels and Airflow
According to the independent review, a slider on the side switches between three power levels, and each one has its own airflow setting. Moving the slider changes both the power and how open the draw feels.
| Power Level | Draw Style | Rated Puffs |
|---|---|---|
| Level I | Restricted mouth-to-lung | Up to 40,000 |
| Level II | Looser mouth-to-lung | Up to 30,000 |
| Level III | Loosest mouth-to-lung | Up to 20,000 |
Our product page refers to adjustable power modes and adjustable airflow without naming three levels, so check the slider on your unit. Even the highest level stays on the mouth-to-lung side, so this is not a device for a wide-open direct-to-lung pull. If you are unsure which style you prefer, our MTL vs DTL guide explains the difference.
Build, Mouthpiece, and Screen
The MySour uses a lightweight C-frame body with an embossed side grip that the reviewer found comfortable. The mouthpiece is described as bite-friendly. The screen shows battery, e-liquid level, the selected sour level, and the power mode. The reviewer found it moderately bright and a little hard to read in daylight. The side button has a clicky but dampened feel.
How It Hits
The independent review describes a restricted mouth-to-lung draw that suits MTL vapers and loosens at the higher power levels. The triple mesh coil performed well, and the reviewer noted that the sourness adjustment made the flavors noticeably more pronounced. One safety note from the review: with 5% nicotine salt, the reviewer advised against restricted lung hits. Our guide on how to inhale a vape properly covers technique, and nicotine is addictive at any strength.
Adjust MySour Flavors
The MySour comes in five sour fruit flavors, each designed to work across all four sour levels. The notes below come from the independent review, along with the settings the reviewer liked best for each one:
- Sour Blue Razz Ice: tangy blue raspberry, best at Power Level III with sour level 4
- Sour Grapple: tart green apple with grape undertones, very sour from the start, best at Power Level III with sour level 2
- Sour Island: a tropical blend with a sour kick, best at Power Level III with sour level 3
- Sour Peach Raspberry: juicy peach with tart raspberry, best at Power Level II with sour level 4
- Sour Pinkberry: pink lemonade with other red fruits, one of the reviewer's two favorites, best at Power Level III with sour level 3
Selection varies with stock, so check the product page for what is available. To browse similar profiles, see our fruity disposable vapes.
Battery Life and Charging
The 850mAh battery lasted about a day of moderate use in the independent review, and about half a day of heavy use on one flavor. Charging is the weak spot: a full charge took about 100 minutes over USB-C, which the reviewer called the main drawback. The screen stays lit while charging. Since higher sour levels and power levels both seem to draw more power, expect shorter battery life if you run the device at the top of both. See our vape battery safety guide for good charging habits.
How Many Puffs Will You Really Get?
The 40,000 puff rating applies to the lowest power level, and it is a ceiling. In the independent review, weight tests suggested the device used roughly 2.85mL of e-liquid per charge cycle, or about 4.5 cycles per device. That is well below what a literal 40,000 puffs from a 20mL tank would suggest, though the reviewer noted it is in line with other disposables. It is one reviewer's measurement, so treat it as a reminder that puff ratings are marketing maximums. Fading flavor, thinner vapor, and a burnt or papery taste are signs the device is nearly done. Our guide on how to tell if a disposable vape is almost empty explains what to look for.
How It Compares to the Other Adjust 40K Devices
Adjust builds each of its 40K devices around one adjustable idea. The MySour adjusts sourness, the MySweet adjusts sweetness, the MyCool adjusts ice, the myRusher is built around a high-intensity Rush Mode, and the MyFlavor mixes two flavors in one device. Read our Adjust MySweet 40K review, Adjust MyCool 40K review, Adjust myRusher 40K review, and Adjust MyFlavor 40K review to compare. You can also browse other disposable vapes with 40,000 to 60,000 puffs.
Who Should Buy the Adjust MySour 40K?
It is worth a look if you:
- Like sour candy flavors and want to tune how tart they taste
- Enjoy having a second dial for intensity alongside the power slider
- Prefer a mouth-to-lung draw across every setting
- Want a high-capacity device with a screen
Consider something else if you:
- Need a fast recharge, since 100 minutes is a long wait
- Want a loose, direct-to-lung draw
- Prefer sweet or cool flavors, where the MySweet or MyCool may fit better
Final Verdict
The Adjust MySour 40K earns attention because its signature feature worked in the independent review. The sour levels were noticeable, they made the flavors more pronounced, and they also changed the power of the hit. The reviewer scored it 4.5 out of 5 and called it highly recommended, with the long charge time as the main complaint. That is a single source and a review from March 2025, and our listing describes the power modes differently, so treat the details as a guide and not a guarantee.
Frequently Asked Questions
What is the Adjust MySour 40K?
The Adjust MySour 40K is a rechargeable, prefilled disposable rated for up to 40,000 puffs, with 20mL of 5% nicotine salt, an 850mAh battery, a triple mesh coil, and a screen. Its signature feature is a four-level sourness control that lets you make the same flavor tangier or softer.
How does the sour control work on the Adjust MySour 40K?
A button on the side cycles through four sour levels: Sour Tickle, Sour Vibes, Sour Rush, and Sour Overload on the product listing. The screen shows the level you have selected. The sour setting does not change the nicotine strength, which stays at 5%.
How many puffs does the Adjust MySour 40K last?
It is rated for up to 40,000 puffs on the lowest power level. An independent review lists 30,000 on the middle level and 20,000 on the highest. These are maximums, and real totals depend on how you draw and which settings you use.
How long does the Adjust MySour 40K take to charge?
An independent review measured about 100 minutes for a full charge over USB-C, which it called the main drawback. The screen stays lit while charging. Use the cable that came with the device and do not leave it charging unattended.
What flavors does the Adjust MySour 40K come in?
The lineup includes Sour Blue Razz Ice, Sour Grapple, Sour Island, Sour Peach Raspberry, and Sour Pinkberry. Selection varies with stock, so check the product page.
What nicotine strength is the Adjust MySour 40K?
It is listed at 5% nicotine salt, which is 50mg/mL. Nicotine is addictive at any strength, and the independent reviewer advised against restricted lung hits at this strength.
Is the Adjust MySour 40K an MTL or DTL vape?
The independent review describes a restricted mouth-to-lung (MTL) draw on the lower power levels that loosens as you move up, but it stays on the MTL side. It is not designed for a wide-open direct-to-lung pull.
How is the Adjust MySour 40K different from the MySweet and MyCool?
All of the Adjust 40K devices are built around one adjustable idea. The MySour adjusts sourness, the MySweet adjusts sweetness, and the MyCool adjusts ice. The myRusher is built around a high-intensity mode, and the MyFlavor mixes two flavors.
This article is for general informational purposes only. Nicotine is an addictive chemical. Intended for adults 21+ only.
