If you want superior battery life, a premium charging case for on-the-go power, and audio tuning specifically optimized for music production workflows, choose Yistao Gen 2; if you need dedicated underwater playback with massive built-in storage to swim without your phone, choose RELAXYO Bone Conduction Swimming.
• Yistao Gen 2: Offers up to 60 hours of total playtime with a portable case and Bluetooth 6.0 for instant pairing, but lacks internal storage for offline swimming use.
• RELAXYO Bone Conduction Swimming: Features 32GB of internal memory for independent MP3 playback underwater and a flexible titanium frame, yet offers only 7 hours of battery per charge with no carrying case.
• Who it's for: The Yistao is ideal for the active creator who needs long sessions and high-fidelity audio details while running or cycling, whereas the RELAXYO is the definitive tool for serious swimmers who cannot carry a device in the pool.
The Yistao Gen 2 stands out immediately as a powerhouse for endurance and audio fidelity, making it an exceptional choice for those seeking best sports earbuds for music production scenarios where battery anxiety is a dealbreaker. Its standout feature is the "Fully Upgraded Silicone Material," which replaces hard plastic with liquid skin-friendly silicone to reduce wearing pressure by 40%. This isn't just a minor comfort tweak; it means you can wear these for extended recording sessions or marathon training without the ear fatigue that plagues traditional open-ear designs. The friction is increased to prevent slipping, ensuring stability during high-intensity movement, while the soft touch makes them feel almost invisible once they are on your head.
For audio purists and producers looking for open ear headphones for music production, the Gen 2 introduces the new ToneTerra system paired with SonicBoost 2.0 Tech. This combination delivers a balanced performance with deep bass and clear highs, a significant upgrade over previous generations with a claimed 30% increase in volume. What matters most here is the specially tuned EQ Mode. It optimizes mid-range contours to make voice content stand out clearly, which is critical when monitoring vocals or mixing tracks on the go. The dual EQ modes allow you to switch between Music Mode for powerful, surging bass and Reading Mode for pure, soft sound that prevents ear fatigue during long listening sessions. This versatility ensures you aren't forced into a single sonic profile.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-27 · 7 min read · Independent comparison
However, this model is not designed for the aquatic athlete. While it boasts a stable IP68 waterproof rating that makes it immune to sweat and rain, it relies entirely on its Bluetooth connection. You will need to pair it with a phone or player via the upgraded Bluetooth 6.0 Ultra-Fast Instant Link chip, which pairs 2x faster than older versions. The battery architecture is equally impressive; a full charge in 1.5 hours delivers 15 hours of continuous listening, and the included charging case provides four additional full charges for a staggering 60-hour total playtime. If your primary goal is best bone conduction headphones for music production or long-duration studio monitoring outside of water, the sheer capacity and audio tuning of the Gen 2 make it the superior technical package.
The RELAXYO Bone Conduction Swimming unit takes a completely different approach, prioritizing independence from external devices over raw battery longevity. Its defining characteristic is the inclusion of 32GB of built-in storage, which holds up to 7,000 songs. This transforms the headphones from a mere accessory into a standalone music player. For swimmers, this is non-negotiable. Since Bluetooth signals cannot transmit effectively underwater, the RELAXYO allows you to toggle between Bluetooth mode and MP3 mode with a simple double-press of the power button. This means you can leave your smartphone on the pool deck and still enjoy your curated playlists or audiobooks while submerged.
The design philosophy here centers on durability and fit for extreme environments. The enclosure material is a lightweight memory titanium frame that conforms to the ear's natural shape. Unlike standard plastics, this metal can be flexibly bent to ensure safety during vigorous exercise and swimming. It creates a secure fit even under the pressure of goggles and swim caps, preventing obvious pressure points even after long-term wear. The controls are intentionally minimalistic, featuring only three buttons to manage power, track switching, volume, and the critical mode toggle. This simplicity reduces the chance of accidental inputs when your hands are wet or moving quickly.
Where the RELAXYO sacrifices is in total runtime and portability accessories. It offers up to 7 hours of music playback after a 1.5-hour charge, which is sufficient for a day of training but falls short compared to the multi-day capability of the Yistao. There is no mention of a carrying case in the data, meaning you must rely on the headphones' own durability to survive in your gym bag or locker. However, for anyone who swims marathons or trains in pools regularly, the ability to go fully wireless underwater without a phone tether outweighs the shorter battery life. It is a specialized tool for the water, built to withstand the elements while delivering audio directly through bone conduction.
• Best for battery life → Yistao Gen 2: With a total of 60 hours including the case, you can go weeks without charging, whereas the RELAXYO requires daily recharging after 7 hours.
• Best for underwater swimming → RELAXYO Bone Conduction Swimming: Only the RELAXYO has the 32GB internal storage required to play music without a phone when submerged.
• Best connectivity speed → Yistao Gen 2: The Bluetooth 6.0 Ultra-Fast Instant Link chip offers 2x faster pairing speeds compared to the Bluetooth 5.4 on the RELAXYO.
• Best audio detail for production → Yistao Gen 2: The ToneTerra system and specific EQ modes for vocal optimization provide a more nuanced sound profile for mixing and monitoring.
• Best build material for flexibility → RELAXYO Bone Conduction Swimming: The memory titanium frame offers superior bendability and conforming fit for tight swim caps and goggles.
• Best value for long sessions → Yistao Gen 2: The included charging case and 15-hour single-charge runtime eliminate the need for frequent power outlets during long days.
• Best for simplicity of control → RELAXYO Bone Conduction Swimming: The three-button interface is straightforward and easy to operate even with wet fingers.
• Best for comfort during extended wear → Yistao Gen 2: The liquid skin-friendly silicone reduces pressure by 40%, offering a softer touch than the rigid titanium frame.
In my opinion, if I were building a setup for music production while maintaining an active lifestyle, I would buy the Yistao Gen 2. The combination of the ToneTerra audio system, the dual EQ modes, and the massive 60-hour battery life creates a workflow that doesn't interrupt creativity. The ability to tune the mids for voice clarity and the comfort of the liquid silicone make it the better all-around device for the ear. However, if your primary activity is competitive swimming, the RELAXYO becomes the only logical choice due to its internal storage capabilities. But for the general user who wants high-quality audio for work and play without being tethered to a wall outlet, the Yistao Gen 2 is the clear winner.
While the Yistao Gen 2 has an IP68 waterproof rating that protects against sweat and rain, it does not have internal storage for MP3 files. Therefore, you cannot listen to music underwater because it relies on a Bluetooth connection which does not work beneath the surface.
The RELAXYO Bone Conduction Swimming headphones come with 32GB of built-in memory, which is equivalent to storing up to 7,000 songs. You transfer these files directly to the headphones using a magnetic charging cable and a computer.
Both models prioritize comfort but in different ways. The Yistao Gen 2 uses liquid skin-friendly silicone to reduce wearing pressure by 40%, while the RELAXYO uses a lightweight memory titanium frame that bends to fit the ear naturally without causing pressure.
No, the Yistao Gen 2 includes a portable charging case that provides four additional full charges. A quick 5-minute charge gives you one hour of playback, and a full charge takes about 1.5 hours, so you rarely need to find a wall outlet during the week.
As an Amazon Associate I earn from qualifying purchases.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.
When you buy through links on this page, we may earn a commission from qualifying purchases at no extra cost to you.
Amazon and the Amazon logo are trademarks of Amazon or its affiliates. This site is an independent third-party review and is not affiliated with, endorsed by, or sponsored by Amazon or the product brands mentioned.