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If you want wireless freedom with marathon battery life and app-tuned bass, choose JBL Tune 720BT; if you need safe, plug-and-play wired headphones for a child at school or on the road, choose Acer OHW328. That's the honest split. One is a Bluetooth over-ear built for long listening sessions; the other is a corded kids' headset built around hearing protection and comfort. Let's break down why each one wins its lane.
• JBL Tune 720BT — biggest strength: Up to 76 hours of wireless playback over Bluetooth 5.3, with JBL Pure Bass sound and a free app EQ. Its biggest trade-off: no 3.5mm jack at all, so you can't plug it into anything.
• Acer OHW328 — biggest strength: Dual safe-volume modes (≤85dB and 94dB) with a universal 3.5mm jack, so it works instantly on Chromebooks, tablets and phones without charging. Its biggest trade-off: it's wired only, with no Bluetooth and no active noise control.
• Who JBL Tune 720BT is for: Adults who want one over-ear pair for commuting, work and travel without a cable.
• Who Acer OHW328 is for: Parents buying for kids aged around 2 and up who need safe, hassle-free headphones for school and trips.
The Tune 720BT is a wireless over-ear headphone, full stop. There's no headphone jack on it — connectivity is Bluetooth 5.3 with a 10-metre range. That single fact tells you most of what you need to know: this is a headphone for people who've already cut the cord and don't want to go back. If you're pairing to a phone, laptop or tablet and leaving it paired, this is the natural fit.
The headline number is battery: up to 76 hours per charge, with a full recharge in about 2 hours over USB-C. There's also a speed-charge trick — a 5-minute top-up gives you roughly 3 more hours. I'd call that the real selling point for anyone who forgets to charge. Add a 40mm dynamic driver, 32-ohm impedance and a 20Hz–20kHz range, and you've got a conventional, well-understood driver setup tuned for JBL's Pure Bass signature.
Who should skip it? Anyone who needs a wired connection. There's no jack, so a classroom Chromebook cart, an older in-flight entertainment system or a wired mic setup is out. And if you're shopping for a young child, the lack of volume limiting is a real consideration — more on that below.
Acer OHW328: Who It's For
The OHW328 is the opposite philosophy entirely. It's wired, it's for kids, and it's designed around two things: protecting young ears and staying comfortable for hours. The connector is a standard 3.5mm jack, which means plug-and-play on school Chromebooks, laptops, Kindles and phones — no pairing, no charging, no "the battery died in the middle of class" moments.
The feature I'd underline is Dual Safe Sound Mode. You can cap volume at ≤85dB for school and home use, or switch to 94dB for noisier environments like travel. For a parent, that's the whole pitch: the headphone makes the volume decision rather than leaving it to a child. It's built from BPA-free ABS and stated as compliant with US CPC and CPSIA safety standards.
Comfort is the other half of the story. The earcups are multi-directional, rotating ±10° in all directions, with large 54x40mm openings meant to avoid pressure points on growing ears. At 5.29 oz it's light enough to wear all day, and the adjustable headband is stated to fit kids from age 2 through teens and even adults. The 40mm dynamic driver and 32-ohm impedance are standard fare, with a 20Hz–20,000Hz range.
Who should skip it? Anyone who wants wireless. There's no Bluetooth, no app, and noise control is listed as none — this isn't a noise-cancelling commuter headphone. It's a purpose-built kids' headset, and it's excellent at exactly that.
Side-by-Side: Which Should You Choose?
• Best for young kids and school → Acer OHW328. ≤85dB/94dB safe-volume modes and a 3.5mm jack that works on Chromebooks instantly.
• Best for wireless freedom → JBL Tune 720BT. Bluetooth 5.3, 10m range, no cable to snag.
• Best for zero setup and zero charging → Acer OHW328. Plug in and go; no pairing, no battery to manage.
• Best for sound customization → JBL Tune 720BT. The free JBL Headphones app includes an EQ and multilingual voice prompts.
• Best for long-wear comfort on small heads → Acer OHW328. 5.29 oz, ±10° rotating earcups and 54x40mm openings designed to avoid pressure points.
• Best for calls → JBL Tune 720BT. Ear-cup call buttons plus Voice Aware so you hear yourself talking.
• Best for hearing protection → Acer OHW328. Volume limiting is the core design goal, not an afterthought.
I'd buy the JBL Tune 720BT for myself. The 76-hour battery, Bluetooth 5.3, app EQ and flat-folding design make it the more versatile headphone for an adult who wants one pair for music, calls and travel — and the lack of a jack simply doesn't matter if everything you own is wireless. But if I were buying for a child, I'd pick the Acer OHW328 without hesitation: safe volume modes, kid-friendly materials and a plug-and-play 3.5mm jack are exactly what school and travel demand. Different jobs, different winners. Check the current price on Amazon before you decide, since that's the one variable I can't weigh for you.
how to wired headphones work
Wired headphones like the Acer OHW328 carry the audio signal from your device through a physical 3.5mm cable to the drivers, so there's no Bluetooth pairing or battery involved. Power comes from the device itself, which is why a wired headset never needs charging. The JBL Tune 720BT, by contrast, has no jack and relies entirely on Bluetooth 5.3.
how to use wired headphones with iphone
The OHW328 ends in a standard 3.5mm plug, while newer iPhones use a Lightning or USB-C port, so you'd need the appropriate adapter to bridge the two. Once connected, it's plug-and-play — no app, no pairing. If you'd rather avoid adapters altogether, a wireless model like the Tune 720BT sidesteps the issue entirely.
how to fix wired headphones no sound
Start with the basics: confirm the plug is fully seated in the 3.5mm jack, check that the device volume isn't muted, and try a second device to isolate whether the fault is the headphone or the source. Because the OHW328 uses a plain 3.5mm connection with push-button volume control, testing it on another device is quick. Note that the Tune 720BT has no jack, so "no sound" there is a Bluetooth pairing or charge issue, not a cable one.
are these headphones good for kids
The Acer OHW328 is explicitly built for children: dual 85dB/94dB safe-volume modes, BPA-free materials, CPC and CPSIA compliance, and an adjustable headband stated to fit ages 2 and up. The JBL Tune 720BT is an adult-oriented wireless headphone with no volume limiting, so I wouldn't recommend it as a first headphone for a young child.
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