If you want long battery life and a simple fold-flat travel design for small ears, choose SONY Headphones WH-CH510; if you need longer playback, two-device pairing, and adjustable sound, choose Sony WH-CH520. For headphones for small ears, the key difference is not a documented fit size—the sheets give none—but how you plan to use the pair.
My pick is the WH-CH520 for its longer battery life and multipoint connection, while the WH-CH510 remains a sensible choice if its simpler feature set suits you better.
• SONY Headphones WH-CH510 strength: up to 35 hours of playback, 30 mm drivers, and earcups that swivel flat. Trade-off: it has no listed multipoint connection or app-based EQ customization.
• Sony WH-CH520 strength: up to 50 hours of playback, quick charging, multipoint connection, and sound customization through the Sony Headphones Connect app. Trade-off: its earcups are on-ear, and the available information does not establish a fit advantage for small ears.
• Both are wireless Bluetooth on-ear headphones with a built-in microphone, voice-assistant compatibility, and a stated Bluetooth range of up to 10 meters.
• Choose the WH-CH510 if you want straightforward listening and a swivel design that packs flat.
• Choose the WH-CH520 if longer battery life, switching between two devices, and adjustable sound matter more.
The WH-CH510 is a straightforward wireless on-ear headset built around the basics: Bluetooth listening, a built-in microphone for hands-free calls, and up to 35 hours of playback. Its 30 mm dynamic drivers are specified for a frequency range of 20 Hz to 20,000 Hz. Those numbers describe the hardware, but they do not tell me how every person will perceive the sound.
A swivel design lets the earcups lie flat, which is useful when you want headphones that are easier to tuck into a bag. The listed Bluetooth range is about 10 meters in line of sight. The model supports SBC and AAC audio formats and offers voice-assistant access through a compatible smartphone.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-21 · 6 min read · Independent comparison
I’d consider the WH-CH510 if you want a simple pair for music, podcasts, and calls without needing to jump between two devices or adjust an EQ in an app. I would skip it if your routine makes the longest battery life or multipoint pairing a priority. For small ears, neither the on-ear label nor the supplied specifications guarantee a comfortable fit; individual comfort depends on how the earcups sit on you.
The WH-CH520’s main practical advantage is its stated battery life: up to 50 hours. It also supports quick charging, with the supplied details stating that three minutes of charge can provide up to 90 minutes of playback. That makes it a stronger match for someone who wants fewer charging interruptions, though actual listening time can vary with use.
It can pair with two Bluetooth devices at once, so you can move between, for example, a laptop and a phone without treating them as separate single-device sessions. The Sony Headphones Connect app offers EQ customization, and DSEE is listed as a feature for boosting the quality of compressed music files. A built-in microphone supports hands-free calling, and the earcups swivel for carrying.
I’d choose the WH-CH520 if you expect to use headphones across multiple devices or want to tailor the sound. It is still an on-ear design, so the feature list cannot confirm that it will fit small ears better than the WH-CH510. A shopper looking for a wireless kids headset for small ears should pay particular attention to fit and comfort rather than assuming either model is sized for a child; the provided information describes both as on-ear headphones and does not specify earcup dimensions.
• Best for longer stated battery life → Sony WH-CH520. It offers up to 50 hours, compared with up to 35 hours for the WH-CH510.
• Best for switching between a phone and a computer → Sony WH-CH520. Its multipoint connection supports two paired Bluetooth devices at once.
• Best for a fold-flat carrying design → SONY Headphones WH-CH510. Its earcups swivel flat, a useful detail when packing it away.
• Best if you want app-based sound customization → Sony WH-CH520. The Sony Headphones Connect app offers EQ options.
• Best if you want 30 mm drivers explicitly listed → SONY Headphones WH-CH510. The WH-CH520 sheet identifies dynamic drivers but does not provide a driver size.
• Best for hands-free calls on either model → Tie. Both include a built-in microphone and support wireless Bluetooth use.
• Best for shoppers seeking small-ear comfort → Neither can be named a clear winner from the available fit information. Both are on-ear designs, and neither sheet gives earcup measurements or a small-ear fit claim.
• Best if you want a simple Bluetooth headset without needing multipoint or EQ controls → SONY Headphones WH-CH510. Its listed features cover everyday listening, calls, voice-assistant access, and flat-swiveling earcups.
The comparison is less about one model being universally superior and more about the features you will notice in a daily routine. If you listen on one device and want a pair that folds flatter for carrying, the WH-CH510’s design may be enough. If you regularly move between a laptop and phone, the WH-CH520’s two-device connection is more directly useful.
For someone searching for the best with mic bluetooth earbuds for small ears, there is an important distinction: these are on-ear headphones, not earbuds. Both have microphones for hands-free calls, but the available details do not establish a small-ear fit or compare call performance in different environments. If fit is your deciding factor, check the physical design and return terms before choosing rather than relying on battery or connectivity specs.
Battery figures are useful for comparing the models, but they should not be treated as a guarantee of identical results for every listener. The WH-CH520 has the larger stated maximum, and its quick-charge detail may help when you forget to recharge. The WH-CH510 still offers up to 35 hours, which is a substantial listening window on paper. The question is whether the extra battery headroom changes your routine enough to matter.
I would buy the Sony WH-CH520 because its longer stated battery life and multipoint pairing solve two everyday annoyances: charging often and switching between devices.
For headphones for small ears, though, I would not call it the better-fitting option based on the supplied specifications; both are on-ear models without documented fit measurements.
I’d choose the WH-CH510 instead if flat-swiveling earcups and a simpler feature set fit your needs better.
The WH-CH520 is listed for up to 50 hours of playback; the WH-CH510 is listed for up to 35 hours. The WH-CH520 also has a stated quick-charge option.
Yes. The WH-CH520 supports multipoint connection, allowing it to connect with two Bluetooth devices and switch between them. Multipoint is not listed for the WH-CH510.
Are the WH-CH510 or WH-CH520 better for small ears?
The available specifications do not identify either model as a small-ear fit or give earcup measurements. Both are on-ear headphones, so the details here do not establish which will feel more comfortable to a particular person.
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