The Mifo O5 Plus Gen 2 earphones are the 2022 update to its predecessor, the O5 Plus. With new and improved Bluetooth 5.0 chipsets, a USB-C charging case for 100 hours of potential playtime, and updated software, they’ve certainly made their entrance.
We put the Gen 2 to the test during various workouts and couldn’t believe how well they fit during yoga. (opens in a new tab) and aerobic exercise (opens in a new tab). Turns out it’s not surprising. Mifo tested approximately 2,000 ears and took two years to develop this model. The result is an unremovable pair of earphones with seven ear cushion options ergonomically designed to fit your unique ear canal.
Noise Cancellation: Yes
Smart Enabled/Compatibility: Yes
Waterproof: IPX7 waterproof
Battery duration: 100 hours of playback in case, 7 hours of playback without charging in 20 minutes
Bluetooth: Yes, up to 12 meters away
Rest assured, you can jump rope, burpee or run without these headphones moving an inch, and passive noise-canceling seals further block out sound for superior performance.
They made it into our roundup of the best running headphones (opens in a new tab), but this model could have benefited from more volume, and the lack of an associated app means you can’t customize its sound. Mifo says its built-in tuning firmware eliminates the need for an app, and two control buttons on each earbud, as well as Siri and Alexa support, help a bit.
We prefer the touch control technology found on other models, but at least you can control the sound from your ears rather than your phone. Find the best fitness trackers (opens in a new tab) to pair, or read on for our full review of the Mifo O5 Plus Gen 2 earphones.
Price and release date
The MSRP of the Mifo O5 Plus Gen 2 earphones is $89.99 / £109.99, available through the Mifo website. They are currently discounted, and you can also find them cheaper on Amazon.
We know that the cost of living crisis means that spending money on technology can seem frivolous. Still, these earphones are in the mid-range market compared to other models we tested, such as the Soundcore Liberty 3 Pro earphones. (opens in a new tab) which retails for about $200.
These headphones are expensive, but they welcome improvements over their predecessors like the 2022 update to the O5 Plus model.
Configure and design
The Mifo O5 Plus Gen 2 earbuds feature a sleek and durable aluminum construction, with each earbud housing a Bluetooth 5 chipset. Vacuform technology (which creates the metallic texture) prevents the earbuds from conducting, protecting them from temperatures hot or cold, and the water-resistant nano-coating prevents rust from sweat and rain, so you can work out the way you want.
Ours came in metallic gray, but you can choose from a variety of colors. We loved the look, but the case is quite heavy and not ideal for pockets when running.
The O5 model took two years to develop, and Mifo says they studied over 2,000 ears to create an ergonomic design that remains comfortable for all ear shapes. We couldn’t agree more: they are one of the most comfortable and safest models we tested. The headphones even come with interchangeable ear tips to help you find the right fit for your ears; we opted for the smaller ones, which are tricky to adjust at first but very secure once they’re on.
Two small buttons are located on the outside of the earpiece, allowing you to control functions such as volume and ambient sound mode. We found that pressing and holding the buttons bothered our ears and we preferred other brands’ touch controls, but having headset controls available is still a useful feature, even if they’re difficult to press.
The earphones are easy to pair and should be immediately visible in your Bluetooth settings, working with Android and iOS smartphones and wearable devices. You can also press and hold the power button on either earbud for 8 seconds to pair them.
Mifo has included a portable power bank and a USB-C cable (a nice touch) that allows you to connect your smartphone to its case to charge it on the go. According to Mifo, these earphones ‘power your workout and your devices’, which we think offers more bang for your buck.
There are two small buttons located on each earbud to provide convenient control over volume, taking calls, or activating voice assistant. You also get access to Siri and Alexa, and internal microphones improve sound quality so you can take calls without the metallic effect of some cheaper headphones. We test taking calls on our daily dog walk, and it’s good enough for work calls.
Basic controls allow you to control the sound in your ears. Pressing the left button on the right earbud decreases the volume, while pressing and holding for two seconds takes you to the previous song. The same button on the left earcup increases the volume, and a two-second long press skips to the next song.
The buttons on the right let you answer and hang up calls, pause and play music, and a double press activates your voice assistant. You can also press and hold for two seconds to activate or close ambient sound mode; this transparency mode helps you stay aware of outside noise, which we found to be perfect for running outside or even walking home at night.
The controls are default, so you can’t modify them, but one feature we love is the independent usage control. It allows you to pair each earbud with a separate device, use both together, or pair one earbud while charging the other without affecting the quality of sound you receive in your ears.
We were impressed with the fit of the Mifo 05 Plus Gen 2 earbuds. We’ve always struggled to find an earbud that stays secure when running, but these don’t budge. As we mentioned, Mifo tested on over 2,000 ears to find a fit that works for the unique shape of your ear canal, so it makes sense that these would be so effective at staying in place.
We did weight training, running, and yoga to test this model and didn’t have to adjust them once. The ear tips are tricky to fit on the smaller sizes, but once fitted they seal with our ears and block out an impressive amount of external noise.
The fussy buttons irritated our ears from the constant downward pressure. Touch control upgrades would be welcome, but it’s certainly not a deciding factor in whether or not to buy these headphones.
Finding headphones that hold up during downward dog isn’t an easy task, but the Gen 2 got the job done, and we’d recommend them if you know you struggle with uncomfortable headphones in the gym.
We have seen conflicting information about the number of ear tips in the box. Our sample came with five, but we have read that Mifo includes seven. User feedback seems to range between four and seven, so we’ll update this guide when we have more clarity and confirmation.
We enjoy the sound quality of the Mifo O5 Plus Gen 2 earphones but (overall) prefer the intensely immersive sound experience of the Soundcore Liberty 3 Pro (opens in a new tab)Headphones It’s hard to go back once you’ve experienced them, and the difference in sound engineering is quite remarkable.
That’s not to say that Mifo don’t offer a superior sound quality experience, which they do. Full-frequency dynamic drivers are designed to deliver a bigger sound, according to Mifo, using distortion balance to improve quality.
We found the sound to be fairly balanced overall, but we didn’t get the kick we’d hoped for from the bass. Although the vocals are clear, you don’t get the power of the instruments or the punch of the bass that completely immerses you in a song, and we found ourselves cranking up the volume to try to recover.
Value for money
Priced at $89.99, we think the Gen 2 headphones are worth the money. If you’re still on the fence about pricing, you can find hefty discounts on the Mifo website and third-party retailers.
If your goal is to find an unparalleled fit, we highly recommend the Mifo O5 Plus Gen 2 earphones. They are comfortable, reliable and built to last. If sound quality is the most important thing, we’ve tested (and included) better models for you in our guide, although the price reflects that.
The Mifo O5 Plus Gen 2 earphones look great, but they don’t offer mind-blowing audio quality. However, they do pack great battery life along with a portable power bank and single-use or multi-use headphones.
They accommodate any form of exercise, whether you enjoy swimming, yoga, or high-intensity exercise, and don’t budget when you break a sweat either. Plus, they’re stylish. So if you plan to perfect your weight training at home (opens in a new tab) this year, you won’t send these headphones skidding across the room, and you can select another ear tip if you do.
We don’t get tired of using them, and neither will your ears, but other headphones in our guide provide a more powerful music experience.
Recommended by 20 Grammy Award-winning audio producers, Soundcore Liberty 3 Pro headphones don’t compromise audio performance. Immersive 3D surround sound, customizable controls (via its app), and ANC noise cancellation elevate these headphones to one of our favorite models. But they are expensive and also thick to wear – we couldn’t get them to fit despite interchangeable ear tips and wings.
If you don’t get along with headphones, the wraparound design of Beats Powerbeats Pro might suit your needs better. They hook around your ears and are sweat and water resistant to pair well with high-intensity exercise. However, they don’t have noise cancellation or an app.