If you want wireless freedom and long battery life for running, choose SONY WH-CH520; if you need a wired, in-ear fit with splash resistance, choose Sudio V3.
For running, I’d lean toward Sudio’s lighter, cable-connected design if a secure in-ear fit matters most; Sony makes more sense if you prefer an over-earband-free, wireless listening routine and long stretches between charges.
If you want wireless freedom and long battery life for running, choose SONY WH-CH520; if you need a wired, in-ear fit with splash resistance, choose Sudio V3.
The key difference in this Sudio vs Sony earbuds comparison is straightforward: Sony is a wireless on-ear headphone, while Sudio is a wired earbud.
For running, I’d lean toward Sudio’s lighter, cable-connected design if a secure in-ear fit matters most; Sony makes more sense if you prefer wireless listening and long stretches between charges.
SONY WH-CH520 vs Sudio V3 at a Glance
• SONY WH-CH520: Up to 50 hours of battery life, quick charging, and multipoint Bluetooth; its on-ear design is not in-ear and offers no noise control.
• Sudio V3: Lightweight wired earbuds with a secure in-ear fit, sound isolation, physical buttons, and IPX4 splash resistance; the cable means no wireless freedom.
• SONY WH-CH520 is for listeners who want wireless headphones for daily use and do not want to charge them often.
• Sudio V3 is for people who prefer wired earbuds, want an in-ear fit, and need splash resistance for everyday movement.
The WH-CH520 is an on-ear Bluetooth headphone with a lightweight build, soft ear pads, an adjustable headband, and swivel earcups. Its standout practical advantage is battery life: Sony lists up to 50 hours, with quick charging that can provide up to 90 minutes of playback after three minutes of charging. For someone who listens through a long workday, commutes, or travels, that reduces how often charging needs to enter the routine.
How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
It can connect to two Bluetooth devices at once, which is handy if you move between a laptop and phone. A built-in microphone supports hands-free calls, while Sony’s Headphones Connect app offers EQ customization. DSEE is also included to improve the playback of compressed music files. Those features make it a flexible choice for calls and everyday listening, not just music.
For running, the trade-off is the fit. These are on-ear headphones, not earbuds, and the listed noise control is none. I would choose them if I wanted Bluetooth convenience and a long-lasting battery, but skip them if I specifically needed a close-fitting in-ear design, sound isolation, or splash resistance. The product information does not list a water-resistance rating.
Sudio V3 is a wired, USB-C earbud with a 14-gram listed weight, a braided cable, and a built-in microphone. Its in-ear design is described as secure and insulating, which can help keep listening more private and reduce sound leakage. Physical buttons provide a direct way to control playback without relying on touch controls.
For running, the fit and cable connection are the main attractions. The earbuds are rated IPX4 for splash resistance, and they do not need charging. That means there is no battery to replenish before heading out. The 10 mm dynamic drivers and microphone also suit ordinary music listening and calls, while the USB-C connection makes them a wired option for compatible devices.
The compromise is just as clear: the cable stays with you, and the earbuds do not offer Bluetooth. I’d skip the V3 if wireless movement or switching between two devices is a priority. I’d consider it if I value a wired connection, an in-ear shape, physical controls, and splash resistance more than cable-free convenience.
• Best for long listening between charges → SONY WH-CH520. Its listed battery life reaches up to 50 hours, and quick charging adds playback time after a short charge.
• Best if you want earbuds rather than headphones → Sudio V3. It sits in the ear; Sony’s model rests on the ear.
• Best for a cable-free run → SONY WH-CH520. It uses Bluetooth, while the Sudio’s USB-C cable remains connected during use.
• Best for a wired run without charging first → Sudio V3. It draws a clear line between wired listening and battery-powered wireless use: there is no charging step.
• Best for splash resistance → Sudio V3. It has an IPX4 rating; the Sony information provided does not list a water-resistance rating.
• Best for switching between a phone and laptop → SONY WH-CH520. Its multipoint feature lets it connect to two Bluetooth devices at once.
• Best for in-ear sound isolation → Sudio V3. Its in-ear design is described as insulating, while Sony lists no noise control.
• Best for adjustable sound through an app → SONY WH-CH520. EQ customization is available in Sony’s Headphones Connect app.
Neither one is a conventional noise-cancelling pick based on the available specifications. Sony lists no noise control, and Sudio describes sound isolation from its in-ear design rather than active noise cancellation. If you’re searching for the best noise cancelling headphones for running, neither model’s listed features establish that it provides active noise cancellation. If you mean a headset for music and calls, rather than a noise-cancelling model, the decision comes down to wireless on-ear headphones versus wired in-ear earbuds.
Likewise, there is no universal winner for the best open ear headphones for running here. Neither is described as an open-ear design: Sony rests on the ears, and Sudio fits inside them. And although someone might search for the best bluetooth headset for running, only the Sony is Bluetooth; the Sudio is wired. The right choice depends on which of those trade-offs fits your routine.
For running, I’d choose the Sudio V3 if I wanted an in-ear fit, splash resistance, and no battery to charge.
Its wired connection is a real limitation, but its practical fit-and-moisture features suit that specific use better on paper.
I’d buy the SONY WH-CH520 instead for everyday wireless listening, multipoint connection, and long battery life.
My overall pick for a runner who values an in-ear design is Sudio V3; for a runner who values Bluetooth, Sony is the clearer fit.
Sudio V3 has an in-ear fit and IPX4 splash resistance, and it does not require charging. Sony is wireless and offers up to 50 hours of battery life, but it is an on-ear design and no water-resistance rating is listed.
The listed specifications do not identify active noise cancellation on either model. Sony lists no noise control; Sudio describes sound isolation from its in-ear design.
The Sony is the only one with a listed battery-life figure: up to 50 hours, with quick charging. Sudio V3 is wired and does not need charging, so it has no battery-life figure to compare.
Neither model matches that description exactly. Sony is wireless, but it is an on-ear headphone rather than an earbud; Sudio is an in-ear earbud, but it uses a USB-C cable.
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.