Lost Mary Ultrasonic 35K Review: Does Ultrasonic Tech Make a Difference?

Design & Build Quality

The Lost Mary 35K is, in my opinion, one of the best-looking disposables to come out in the past year. It’s not overly complicated or trying to look futuristic, but it has enough design elements that it doesn’t look overly simple. It’s a perfect balance between simple and complicated, and I think that it looks great.

The rounded sides and corners look and feel great, and the size is on the larger side, but still portable. It’s 101mm tall, 52mm wide, and 28mm deep, so it’s just a bit bulky, but it definitely feels solid. The 95g weight also makes it heavier than your average disposable, but I wouldn’t go so far as to call it heavy.

All of the flavors feature a satin paint that is really nice, along with soft-touch accents. This soft-touch material is on the flavor adjustment wheel, brand band, and the mouthpiece, and I generally like it. However, the flavor adjustment wheel is more rubbery than soft touch, which means that it picks up lint and hair like crazy. It drives me nuts to have little fluffs all over something that I’m about to inhale on, so it’s a chore keeping it clean.

Aside from the texture, the adjustment wheel rotates smoothly and clicks into place with each setting. There’s also an e-juice viewing window right below it, which allows you to see how much e-juice you have remaining in each compartment. It can be a bit hard to see into, though, because there’s no window on the other side to let light through. Rotating it around a bit to see the air bubble will give you a pretty good idea of where you’re at, though.

The individual e-juice and battery indicators are nice and bright. These are made up of four indicators for each one, so there’s no exact percentage, but each one represents 25%, so it’s easy enough to work out where you’re sitting.

Lastly, the mode switch and Type-C charging port are on the bottom of the device. The mode switch also functions as the airflow control, with ‘Normal’ mode being a tighter draw and ‘Boost’ mode delivering an airier draw. Independent airflow control would be better, but it’s nice to at least have some way to control the airflow.

Features

The biggest feature, and the one that got this device its name, is the ultrasonic technology inside of the Ultrasonic 35K. There’s not much information available on what this actually means or how it works, but Lost Mary says that it produces a “wave of ultra-fine mist, rich in flavor”.

I found the flavor to be good from this device, even better than average, and it’s a very smooth draw as well for being a 50mg/ml strength, but I can’t say that it’s definitely because of the ultrasonic technology. It’s hard to say for sure, especially when I don’t know the details on how it works.

Another big feature is the flavor control wheel. There are four settings on the wheel: Enhanced flavor, normal, Enhanced flavor, and Tart.

Normal (indicated by a .) is the base dual mesh coil tank. Enhanced flavor and Tart are the ultrasonic tanks. Rotating the wheel lets you choose how you’re vaping: either just from the base tank or from the base tank plus one of the other tanks.

Switching between these is supposed to change the flavor, but the difference is minimal. Maybe it’s just my sense of taste, but I had to concentrate really hard and switch back and forth between the settings to even notice a difference. The enhanced flavor tanks make it a bit sweeter, and the tart tank makes it a bit more sour, but the difference is small. Thankfully, the flavors are good to begin with, so I still happily rotated through the settings to vape all of the e-juice.

The Lost Mary Ultrasonic 35K has two power modes: normal and boost. In normal mode, the device is rated for up to 35K puffs, while in Boost, the puff rating drops down to 20K. The airflow is also adjusted using this same mode switch, but both are a mouth-to-lung draw. Normal delivers a draw that is a bit tighter, whereas Boost allows for more airflow to compensate for the higher wattage.

Flavors

Compared to some of Lost Mary’s other disposables, the Ultrasonic 35K has a pretty limited flavor selection. There are only twelve flavors to choose from, which is much less than the 37+ that are available for the MT35000 Turbo. These flavors are:

• Blue Razz Ice 
• Ice Mint 
• Juicy Peach Ice 
• Pink Lemonade 
• Sour Apple Ice 
• Strawberry Ice 
• Strazz 
• Triple Berry 
• Watermelon Ice 
• Watermelon Fcuking Fab

As always, I’m going to describe how three of these flavors taste to me and what I think of them. However, keep in mind that just because I like a flavor does not mean that you will like it. Similarly, if I don’t like a flavor, it doesn’t mean you won’t like it. This is solely my subjective opinion.

Blue Razz Ice

Lost Mary makes a good Blue Razz Ice (I’ve tried it on a few of their other devices), and this one is no different. It’s subtle, so maybe not as sweet as some might prefer, but very enjoyable nonetheless. The best notes really come out on the exhale.

Pink Lemonade

This is a great pink lemonade that isn’t overdone with the flavor. It’s just what I hope for in a lemonade flavor: a good mix of sweet and tart without going overboard on the lemonade taste. It’s just as sweet as it is lemony and sour, with a bit more of a lean into the sweet side.

Juicy Peach Ice

This is the most flavorful of the three that I tried, with a juicy, candied peach flavor that really blasts your taste buds on the inhale. This flavor is sweet, but because of the candy notes, it makes sense. This one is definitely my favorite and highly recommended.

How long do they last?

When vaping on the Ultrasonic 35K, you’ll want to keep in mind that even when using the Enhanced or Tart flavor settings, the main e-juice tank is still being used. This means that you’ll want to keep an eye on the main e-juice level, as the Enhanced and Tart settings only supplement the main e-juice tank and do not replace it completely.

With that said, it can be hard to keep track of all of the e-juice tanks, but the e-juice level lights give a pretty good indication of where you’re sitting. Still, I recommend checking on all of the tanks every so often, just to keep tabs.

Using the Ultrasonic 35K almost exclusively in normal mode, two days of use per charge is what I’ve been getting. Sometimes less, depending on how much I vape. The 800mAh battery is small by today’s standards, so don’t expect to get multi-day usage without having to recharge.

The Ultrasonic 35K only has 1A charging, so charge times aren’t great either. It takes an hour and ten minutes to recharge the 800mAh cell, which is very slow for such a small capacity battery.

The battery indicator lights breathe while charging. Once it’s close to fully charged, the lights will stop breathing but remain on. When charging is completed, the lights turn off.

Verdict

There are so many disposable vapes out there, and I’ve tried the vast majority of them. But the Ultrasonic 35K delivers excellent flavor and smooth vapor that really stand out. The flavor wheel feels a bit gimmicky, as I didn’t find that it really made that much of a difference, but even so, the flavors are very good without needing to be enhanced or extra tart. 

The Ultrasonic technology is a similar story. I’m not sure how much of a difference it makes, or even how it works for that matter, but the draw is smooth and the flavor is great. Is it because of the Ultrasonic technology? I don’t know, but this is definitely a vape you want to get your hands on.

Like any disposable, there’s room for improvement, and the main area I’d like to see upgraded is the battery and charging speed. An 800mAh battery just isn’t enough for multi-day use, and that’s what would really bring the Ultrasonic 35K up a notch in my books.

It’s not without its faults, but it’s an incredibly smooth and flavorful vape overall. If you’re after a disposable that brings the flavor with smooth vapor, you’ll want to try the Ultrasonic 35K.