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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want all-day over-ear comfort with the longest battery life and the most granular noise-cancelling control, choose Sony WH-CH720NL; if you need pocket-sized true wireless earbuds that survive workouts and downpours while delivering punchy bass, choose JBL Tune Flex.
• Sony WH-CH720NL — biggest strength: Over-ear design with an Integrated Processor V1, DSEE upscaling, 360 Reality Audio, multipoint pairing and up to 35 hours of playback with noise cancelling on.
• Sony WH-CH720NL — biggest trade-off: It's a full-size headphone weighing 192 g, so it lives in a bag rather than a pocket, and the spec sheet lists no water-resistance rating.
• JBL Tune Flex — biggest strength: True wireless earbuds with 12 mm drivers, IPX4 water resistance and sweatproofing, plus 4 mics for calls and a charging case that extends total listening time.
• JBL Tune Flex — biggest trade-off: Much shorter single-charge runtime, and the in-ear fit means you're dependent on eartip sizing for comfort and seal.
• Who each pick is for: Sony WH-CH720NL suits commuters, remote workers and long-session listeners; JBL Tune Flex suits gym-goers, runners and anyone who wants earbuds that disappear into a pocket.
The WH-CH720NL is built around one idea: keep the music going for as long as possible without asking you to think about it. Sony pairs its Integrated Processor V1 with the Digital Sound Enhancement Engine, which is designed to rebuild some of the detail lost when compressed audio files are squeezed down. The result, per the spec sheet, is balanced tuning with clear vocals rather than a bass-forward signature. If you mainly listen to podcasts, acoustic tracks, jazz or vocal-heavy pop, that neutral approach is a genuine advantage.
Noise cancelling is where this headphone gets interesting. Dual Noise Sensor technology combined with the processor lets you adjust ambient sound across 20 different levels through the Sony Headphones Connect app. That's a level of fine control most headphones simply don't offer — you can let in just enough train announcement or office chatter to stay aware without giving up the quiet. Add 360 Reality Audio certification and EQ customisation, and you have a headphone you can genuinely tune to your own ears and taste. Multipoint connection lets it hold two Bluetooth devices at once, which matters if you're switching between a laptop and a phone all day. Swift Pair and Fast Pair speed up the initial setup, and Precise Voice Pickup Technology with beamforming mics and a wind noise reduction structure targets clearer calls.
Comfort is the other pillar. At 192 g with a lightweight ergonomic build and comfortable earpads, this is designed for hours of wear — the kind of headphone you put on at 9 a.m. and forget about. Battery life is rated up to 35 hours with noise cancelling on, and quick charge gets you back to listening fast when it eventually runs down. The over-ear plastic enclosure is durable enough for daily bag life, though the sheet lists no IP rating, so I wouldn't plan on wearing it in heavy rain. Buy it if you want one headphone for desk work, commuting and long flights. Skip it if you need something that fits in a jeans pocket or can handle sweat.
The Tune Flex takes the opposite approach. These are true wireless earbuds with a stick form factor, and JBL uses 12 mm dynamic drivers to push its Pure Bass Sound signature. If your playlist leans hip-hop, EDM, pop or anything rhythm-driven, that tuning is going to feel more immediately exciting than a neutral, studio-style presentation. The stick design also puts the mics and controls closer to your mouth and fingers, which is part of why the call setup works as well as it does.
The feature set is unusually complete for earbuds at this tier. Active Noise Cancelling uses two microphones to cut down background noise, and Smart Ambient gives you two modes: Ambient Aware to let the world back in when you're walking somewhere you'd rather hear traffic, and TalkThru to pause the music for a quick conversation without pulling the buds out. Four microphones handle calls in stereo, and VoiceAware lets you control how much of your own voice gets routed back so you don't end up shouting. That's a thoughtful detail for anyone who spends a lot of the day on calls.
Battery is where you need to read the numbers carefully. JBL rates the Tune Flex at up to 32 hours total, split as 8 hours in the buds plus 24 in the case. With noise cancelling engaged, that drops to 6 hours plus 18 in the case. Speed Charge gives you 2 hours of playtime from a 10-minute top-up, which is the number that actually saves you when you're heading out the door and realize you forgot to charge. The IPX4 rating and sweatproofing mean rain and workouts aren't a problem, and the included three sizes of eartips plus the silicone-and-plastic build suggest a fit you can dial in. The carrying case weighs 1.4 ounces. Buy it if you train, run, commute light or want earbuds that handle weather and calls. Skip it if you want maximum runtime per charge or prefer the open, airy feel of an over-ear.
Side-by-Side: Which Should You Choose?
• Best for battery life → Sony WH-CH720NL. Up to 35 hours with noise cancelling on versus the Tune Flex's 8 hours in the buds, or 6 with ANC active.
• Best for noise-cancelling control → Sony WH-CH720NL. Twenty adjustable ambient sound levels beat a simple on/off with two smart modes.
• Best for calls → JBL Tune Flex. Four microphones in stereo plus VoiceAware give you direct control over how much of your own voice you hear.
• Best for bass-heavy music → JBL Tune Flex. The 12 mm drivers and stick form factor are tuned specifically for JBL Pure Bass Sound.
• Best for long desk or travel sessions → Sony WH-CH720NL. A 192 g over-ear build with comfortable earpads is made for hours of continuous wear.
• Best for portability → JBL Tune Flex. Earbuds plus a 1.4-ounce case will vanish into any pocket; a full-size headphone won't.
• Best for switching between devices → Sony WH-CH720NL. Multipoint connection holds two Bluetooth devices at once.
• Best for immersive audio features → Sony WH-CH720NL. 360 Reality Audio certification and app-based EQ put it ahead on personalisation.
If I had to pick one, I'd take the Sony WH-CH720NL. In my opinion, the combination of up to 35 hours of playback with noise cancelling on, twenty-level ambient control, multipoint pairing and a 192 g over-ear frame makes it the more versatile daily driver for work, travel and long listening sessions. I'd only steer you to the JBL Tune Flex if portability, sweat and rain resistance, or punchy bass matter more to you than runtime — because that's exactly where it wins. Check the current price on Amazon before you commit, since that's the one variable that can flip this decision.
On paper, yes. Sony gives you Dual Noise Sensor technology with 20 adjustable ambient sound levels through its app. JBL offers Active Noise Cancelling with two microphones plus Ambient Aware and TalkThru modes, but not the same granular level control.
How long does the JBL Tune Flex battery last compared to the Sony WH-CH720NL?
JBL rates the Tune Flex at up to 32 hours total — 8 hours in the buds plus 24 in the case — dropping to 6 plus 18 with noise cancelling on. Sony rates the WH-CH720NL at up to 35 hours with noise cancelling on.
Yes, that's its clear advantage here. The Tune Flex carries an IPX4 water-resistance rating and is described as sweatproof, so workouts and downpours are covered. The Sony WH-CH720NL spec sheet lists no water-resistance rating, so I'd keep it out of the rain.
The JBL Tune Flex has the edge on paper with four microphones for stereo calls and VoiceAware control over your own voice. The Sony WH-CH720NL counters with Precise Voice Pickup Technology, beamforming mics and a wind noise reduction structure. Both are built for calls; earbuds simply sit closer to your mouth.
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