If you want superior open-ear comfort and extended battery life for long workdays, choose TAKSTAR LA350W; if you need a secure in-ear fit with deep bass for intense workouts, choose UPUNAIS Ear Buds.
• TAKSTAR LA350W: Its biggest strength is the lightweight, open-ear design that keeps your ears aware of surroundings during long calls, but it lacks active noise isolation for noisy environments. This pick is for professionals who prioritize all-day wearability and situational awareness.
• UPUNAIS Ear Buds: Its biggest strength is the secure in-ear hook structure and powerful 12mm drivers for immersive music, though the closed design may feel isolating during long listening sessions. This pick is for athletes and commuters who need a rock-solid fit and deeper sound engagement.
The TAKSTAR LA350W is engineered specifically for those who find traditional earbuds uncomfortable after an hour or two of use. By utilizing an open-ear architecture, this device avoids plugging the ear canal entirely, which is a game-changer for anyone who needs to hear their environment while on a call. The unit weighs only 8.5 grams per earbud, making it nearly invisible on the head. You can wear these for hours without that familiar pressure or fatigue behind the ear. The ergonomically designed earhooks are supple enough to adjust across different ear shapes, ensuring they stay put even when you move around.
For someone working from home or taking calls while moving through a busy office, the open-air enclosure is the defining feature. It allows you to listen to audio clearly while still hearing colleagues or household noises. The Bluetooth 5.4 connectivity ensures that your voice comes through clearly on the other end thanks to the built-in ENC (Environmental Noise Canceling) microphone. This technology filters out background chatter so your voice remains crisp. With a total playtime of 50 hours including the charging case, you will rarely need to plug them in during a standard work week. A single charge provides 12 hours of continuous use, which is more than enough to get through a full day of meetings.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-30 · 7 min read · Independent comparison
However, this product is not for everyone. If you are looking for silence in a loud gym or a crowded train, the open design will let outside noise in. There is no passive isolation because the driver sits just outside the ear canal. Additionally, while the 13mm dynamic driver delivers pure sound with a frequency response of 20Hz to 20kHz, the lack of physical blockage means the bass might not feel as punchy as in-ear competitors. You should skip this model if you need absolute privacy for your conversations or require maximum volume isolation in high-decibel environments. It is best suited for the user who values comfort and clarity over deep bass impact.
The UPUNAIS Ear Buds cater to a different demographic: those who demand a secure, in-ear seal and a robust audio experience. Unlike the open design of the TAKSTAR, these buds feature a classic in-ear shape with flexible hooks designed to lock into place. This makes them ideal for running, cycling, or high-intensity interval training where movement is constant. The IPX4 waterproof rating means you do not have to worry about sweat damage during a grueling workout or getting caught in light rain. The silicone material used for the ear tips and hooks ensures a comfortable grip that doesn't slip, even when you are dripping with perspiration.
Sound quality here leans towards power and immersion. Equipped with a 12mm dynamic driver, these earbuds deliver deep bass, clear mids, and crisp highs. The impedance is 32 ohms, and the sensitivity reaches 115 dB, suggesting a loud and detailed output that fills the ear canal completely. This is perfect for users who want to lose themselves in music or podcasts without external distractions. The ENC technology also plays a role here, reducing background noise during calls so your voice cuts through wind or traffic noise effectively. While the single-battery life is listed at 5 hours, the charging case extends the total usage to 50 hours, matching the longevity of its open-ear counterpart.
This product is the right choice for people who prefer the feeling of being "in" the music rather than just hearing it nearby. If you are a runner who needs to know exactly where your feet are landing without worrying about the earbud falling out, the ergonomic hook design offers peace of mind. However, be aware that the in-ear placement creates a sealed environment, which some users find tiring after several hours. If you prefer to keep your ears open to the room or need to hear announcements while commuting, these might feel too isolating. They are best for the active listener who prioritizes a tight seal, deep sound, and stability over situational awareness.
• Best for long-duration calls and comfort → TAKSTAR LA350W. The 8.5g weight and open-ear design prevent fatigue, allowing you to talk for hours without ear pain.
• Best for intense sports and stability → UPUNAIS Ear Buds. The in-ear hook structure and IPX4 rating ensure they never fall out during vigorous activity.
• Best for situational awareness → TAKSTAR LA350W. You can hear your surroundings clearly while listening to audio, which is safer for outdoor walking or cycling in traffic.
• Best for deep bass and immersion → UPUNAIS Ear Buds. The in-ear seal and 12mm driver provide a fuller, more impactful sound profile for music lovers.
• Best for battery efficiency per charge → TAKSTAR LA350W. It offers 12 hours on a single charge compared to 5 hours for the UPUNAIS, meaning fewer top-ups during the day.
• Best for sweat resistance in heavy workouts → UPUNAIS Ear Buds. Both are IPX4 rated, but the in-ear design often handles moisture better by keeping sweat away from the skin surface.
• Best for modern connectivity features → TAKSTAR LA350W. It utilizes the latest Bluetooth 5.4 standard for ultra-low latency and strong interference resistance.
• Best for compact portability → UPUNAIS Ear Buds. The carrying case dimensions (6.7cm length) are slightly more compact than typical open-ear cases, fitting easily into small pockets.
After analyzing the specifications and intended use cases, I would personally buy the TAKSTAR LA350W if my primary goal was finding the best bluetooth headset for calls while maintaining comfort throughout the day. The ability to wear them for 12 hours straight without discomfort is a massive advantage for remote workers or frequent callers. The open-ear design eliminates the "plugged" feeling that often leads to headaches, and the 13mm driver ensures the audio remains clear and balanced. While the UPUNAIS offers great bass and a secure fit for the gym, the TAKSTAR's combination of extreme lightness, extended single-use battery life, and open-ear safety makes it the superior tool for communication-heavy tasks. It strikes the perfect balance between staying connected to your digital world and remaining present in your physical one.
Both models feature ENC (Environmental Noise Canceling) microphones to filter out background noise. The TAKSTAR LA350W is better for calls where you need to hear the caller's environment, while the UPUNAIS offers a tighter seal that helps block ambient noise passively before the digital cancellation kicks in.
The TAKSTAR LA350W lasts significantly longer on a single charge, offering up to 12 hours of playtime. The UPUNAIS Ear Buds provide 5 hours per charge, though both offer a total of 50 hours when using their respective charging cases.
Both products carry an IPX4 rating, which protects against sweat and light splashes. The UPUNAIS in-ear design might feel more secure for high-sweat activities, but the TAKSTAR's open-ear design also handles moisture well and dries quickly.
Yes. The TAKSTAR LA350W uses a 13mm driver for an open, airy sound that emphasizes clarity and vocal presence. The UPUNAIS uses a 12mm driver in an in-ear configuration, which naturally produces deeper bass and a more isolated, immersive audio experience.
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