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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-30 · 7 min read · Independent comparison
If you want marathon battery life, a full-featured companion app, and true on-ear sound isolation, choose SONY WH-CH520; if you need open-ear awareness, sweat-proof durability, and a barely-there fit for running and cycling, choose Ortizan Open Ear Headphones.
• SONY WH-CH520 biggest strength: Up to 50 hours of battery life with quick charging, plus EQ customization and multipoint pairing through the Sony Headphones Connect app.
• SONY WH-CH520 biggest trade-off: On-ear design with no noise cancelling and no water-resistance rating — it's built for desks, commutes and couches, not sweat.
• Ortizan Open Ear Headphones biggest strength: A 19-gram open-ear build in aviation-grade liquid silicone with IPX6 waterproofing, so it stays put and survives rain, sweat and long workouts.
• Ortizan Open Ear Headphones biggest trade-off: Only around 10 hours per charge, and because nothing seals your ear canal, bass and isolation are inherently lighter than an on-ear design.
• Who SONY WH-CH520 is for: Listeners who want long, uninterrupted sessions — workdays, travel, podcasts, calls — and care about sound tuning.
• Who Ortizan Open Ear Headphones is for: Runners, cyclists and gym-goers who need to hear traffic and training partners while music plays.
The WH-CH520 is a classic wireless on-ear headphone built around endurance. Sony rates the battery at up to 50 hours, and the quick-charge function gives you roughly 90 minutes of playback from a 3-minute top-up over USB-C. That combination is the whole pitch: you can leave the cable at home for a multi-day trip and still not think about charging.
Sound is handled by 30 mm dynamic drivers with a 20 Hz–20,000 Hz frequency range and 32-ohm impedance. More interesting than the raw numbers is the software layer — the Sony Headphones Connect app lets you apply EQ presets or build your own, and DSEE upscales compressed files so streaming audio sounds fuller. If you like fiddling with how your music sounds, this is a real advantage over a set-and-forget pair. Multipoint Bluetooth 5.2 lets you stay connected to a laptop and a phone at once, so a call can interrupt a video without you re-pairing anything.
Comfort is where it wins for desk work. The build is lightweight at about 5.1 ounces, the earcups swivel flat for packing, and there's a head cushion and soft ear pads for long sessions. The built-in mic handles hands-free calls, and voice assistants like Siri or Google can be triggered by voice.
Ortizan Open Ear Headphones: Who It's For
The Ortizan OpenCirclet I10 is a completely different animal. Instead of covering or entering your ear, it cradles the ear and fires sound at the canal from a specific angle using air-conduction drivers. The payoff is situational awareness: you hear your music and the world around you at the same time. For runners, that's a safety feature, not a compromise.
The whole unit weighs just 19 grams and is made from aviation-grade liquid silicone, which is the spec that matters most for open-ear designs — the lighter and softer the material, the less you notice it over a two-hour ride. Ortizan pairs that with IPX6 waterproofing, so rain, sweat and splashes aren't a threat. The gold-plated magnetic charging contacts are a smart detail for the same reason: they resist sweat corrosion, which is exactly what kills ordinary port contacts on sports gear.
Audio comes from 14.2 mm dynamic drivers with a 20 Hz–20,000 Hz range and 16-ohm impedance — low impedance means it's easy to drive from a phone. Bluetooth 5.3 handles the connection with support for SBC and AAC, and Ortizan claims lower latency and more stable pairing than older versions. Calls run through an ENC noise-reduction microphone, so your voice is pulled out of wind and traffic noise.
The trade-offs are honest ones. Battery is around 10 hours, and a 2-hour charge refills it — though 10 minutes of magnetic charging gets you roughly an hour of playtime, which is genuinely useful before a spontaneous run. And because nothing seals your ear, you won't get the thump of a closed-back design; open-ear audio is about clarity and awareness, not bass depth.
Who should buy it: runners, cyclists, gym regulars, and anyone who wants headphones they can forget they're wearing. Who should skip it: people who want to disappear into an album on a noisy flight. Open-ear is the wrong tool for blocking out a plane cabin.
Side-by-Side: Which Should You Choose?
• Best for workouts, running and cycling → Ortizan Open Ear Headphones. IPX6 waterproofing, 19 grams, and open-ear awareness of traffic.
• Best for sound customization → SONY WH-CH520. The app's EQ presets and DSEE processing let you tune the output; the Ortizan is tuned for you.
• Best for all-day comfort you forget about → Ortizan Open Ear Headphones. Nothing enters the ear canal and the silicone frame is feather-light.
• Best for hands-free calls at a desk → SONY WH-CH520. Multipoint keeps a laptop and phone connected, and the mic handles calls without reaching for your phone.
• Best for rainy weather and heavy sweat → Ortizan Open Ear Headphones. No water-resistance rating on the Sony; IPX6 on the Ortizan.
• Best for travel and packing → SONY WH-CH520. The swivel earcups fold flat, and the long battery means fewer charging stops.
• Best for hearing your surroundings → Ortizan Open Ear Headphones. That's the entire design premise.
I'd buy the SONY WH-CH520 if my listening happens at a desk, on transit, or across long stretches of the day — 50 hours of battery, app-based EQ, multipoint and clear calls make it the more versatile everyday headphone. I'd buy the Ortizan Open Ear Headphones if my headphones live in my gym bag or on my head during runs — the 19-gram silicone frame and IPX6 rating are built for exactly that, and open-ear awareness is a real safety benefit outdoors. In my opinion, most people who want one pair for everything should start with the Sony, then add an open-ear set for training. If price matters to you, check the current price on Amazon before deciding, since both sit in different budget tiers.
FAQ
how to headphones work
Headphones convert an electrical audio signal into sound waves you can hear. In the SONY WH-CH520, a 30 mm dynamic driver moves air inside a closed on-ear cup, so sound is delivered directly to your ear. The Ortizan uses air-conduction drivers that aim sound at your ear canal from outside the ear, which is why you still hear your surroundings.
Pairing is the same on both: enable Bluetooth on your iPhone, put the headphones in pairing mode, and select them from the Bluetooth list. The Sony uses Bluetooth 5.2 and the Ortizan uses Bluetooth 5.3, and both support AAC, the codec iPhones use. For the Ortizan, if volume seems low on an iPhone, check the Headphone Safety setting and turn off "Reduce Loud Sounds."
how to headphones noise cancelling
Neither of these has active noise cancelling — both list noise control as none. The SONY WH-CH520 relies on its on-ear cushion to passively muffle some ambient sound, which helps on a bus but won't silence a plane. The Ortizan is deliberately open, so it lets sound in rather than blocking it. If active noise cancelling is a must, look elsewhere.
how to headphones
Set them up by charging first, then pairing over Bluetooth and adjusting volume from your phone or the on-device controls. The Sony adds the Headphones Connect app for EQ and multipoint switching between two devices. The Ortizan keeps controls on the earpieces with button and touch media controls, and uses a magnetic cable for charging.
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