We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-01 · 7 min read · Independent comparison
If you want to turn one USB-C port into three — a 60W PD charging pass-through, a 3.5mm jack, and a USB-C headphone jack — choose caojunzhen 1; if you need a pair of wireless open-ear sport earbuds with ear hooks, 58-hour playtime and fast USB-C recharging, choose Piluyaa Open Ear. These two products share almost nothing except the word "charging" in their feature lists, and that is exactly why the choice is easy once you know which problem you actually have.
• caojunzhen 1's biggest strength: one USB-C port becomes three — 60W PD fast charging, a 3.5mm audio jack, and a USB-C headphone jack, all usable at the same time.
• caojunzhen 1's biggest trade-off: it is a small adapter, not a listening device, and it explicitly does not support data transmission. It also needs a PD wall charger to hit its fast-charging potential.
• Piluyaa Open Ear's biggest strength: genuine all-day wireless listening — 58 hours of playtime, a case that refills in 1.5 hours over USB-C, IPX7 waterproofing and TPU ear hooks that keep the buds on your head while you run.
• Piluyaa Open Ear's biggest trade-off: it only works over Bluetooth 5.3, with no wired jack at all, and its "noise cancellation" is passive sound isolation, not active noise cancelling.
• Who each is for: caojunzhen 1 is for the person whose phone or tablet lost its headphone jack and who wants to charge and listen at the same time. Piluyaa Open Ear is for the runner, gym-goer or cyclist who wants sweat-proof wireless audio that stays put.
The caojunzhen 1 is a one-to-three audio converter, and the "one to three" part is the whole story. You plug it into a single USB-C port and it splits that port into a PD-compatible USB-C charging port, a 3.5mm audio interface, and a USB-C headphone interface. That means you can listen to music, take calls, play games or watch video while the device is fast charging — the classic headache for anyone with a modern phone that dropped the 3.5mm jack.
The charging side is where it earns its place in this comparison. It supports 60W fast charging, and it has a built-in chip that identifies the voltage and current your device needs, which helps keep charging voltage and current stable. The manufacturer's own note is worth repeating: for fast charging, use a PD wall charger. Plug it into a weak brick and you simply won't get the speed the adapter is capable of.
Audio quality is handled by a DAC rated at 16bit/192kHz or 24bit/96kHz, plus a 16bit/48kHz ADC. In practice, that's the spec sheet telling you it can carry high-resolution audio through the adapter without adding current noise. Compatibility is broad: iPhone 16/15 Pro Max/15 Pro/15 Plus/15, plus most USB-C devices including Google Pixel 8 and 7 XL, Samsung Galaxy Z Flip 3 5G, and the Galaxy S25, S24, S23, S22 family all the way back through the S20, S10, S9 and S8 lines, Note20 5G Ultra and more. It's a tiny thing — about 0.02 kg — in red, with three ports and no plug of its own.
Buy it if you have a USB-C phone, tablet, laptop or PC and you're tired of choosing between charging and listening. Skip it if you need data transfer (it doesn't support it), or if you're expecting it to be a pair of headphones — it isn't.
Piluyaa Open Ear: Who It's For
Sound comes from 14.3mm dynamic drivers with acoustic tuning aimed at powerful bass, crisp highs and balanced mids. The ergonomic shape improves passive noise isolation, and the built-in microphone is there for calls even in noisy surroundings. Note the wording: this is sound isolation, not active noise cancellation, and the control method is push buttons — physical controls you can find by feel with sweaty or gloved hands, which is a genuinely thoughtful choice for sport.
The charging story is the reason it lines up against the caojunzhen adapter here. The case recharges in 1.5 hours via USB-C, and the earbuds are rated for 58 hours of playtime, with a battery average life figure of 48 hours listed in the specs. Bluetooth 5.3 handles the connection with auto-pairing via a hall switch — open the case and it reconnects to your last device — with a stable range up to 10 meters (about 33 feet). It works with iOS, Android, tablets and laptops. Durability is covered by an IPX7 waterproof rating and nano-coated materials to shrug off sweat and raindrops, and the enclosure uses TPU plus titanium alloy. The earbuds are also built with recycled materials and energy-efficient components, and the ear tips are replaceable, which extends how long you can keep them in service.
Buy it if you run, lift, cycle or do yoga and want wireless audio that stays in place and survives sweat. Skip it if you want a wired option, since there's no jack at all, or if you need true active noise cancelling.
• Best for charging while you listen → caojunzhen 1. It's the only one of the two that lets you fast charge and use audio at the same time through the same port.
• Best for battery life → Piluyaa Open Ear. 58 hours of playtime with a 1.5-hour case recharge is a very different proposition from an adapter that has no battery at all.
• Best for wired headphones → caojunzhen 1. The 3.5mm jack and USB-C headphone jack are the entire point; the Piluyaa has no jack of any kind.
• Best for running and workouts → Piluyaa Open Ear. TPU ear hooks, IPX7 waterproofing and push-button controls are built for movement.
• Best for high-resolution audio specs → caojunzhen 1. The 16bit/192kHz or 24bit/96kHz DAC and 16bit/48kHz ADC are the more specific audio figures here.
• Best for hands-free calls on the move → Piluyaa Open Ear. The built-in mic and Bluetooth 5.3 auto-pairing make it a standalone listening and calling device.
• Best for travel with a laptop → caojunzhen 1. It lists laptops, PCs, smartphones and tablets among compatible devices, and its 0.02 kg weight disappears in a bag.
• Best if you want one purchase to cover music and sport → Piluyaa Open Ear, provided you're fine going fully wireless.
In my opinion, most people searching these two names together are actually solving a charging problem, not a headphone problem — which is why I'd buy the caojunzhen 1 first. It restores the two things modern phones keep taking away: a headphone jack and the ability to charge while you use it, with a 60W PD pass-through and a proper DAC behind the audio path. The Piluyaa Open Ear is the better buy only if your real goal is a pair of rugged wireless sport earbuds with long playtime and fast case recharging. Different jobs, different tools. Check the current price on Amazon before you commit, since both are inexpensive enough that owning both isn't unreasonable.
FAQ
how to charge headphones faster
how to charge headphones
Plug the charging cable into the headphones or their case and into a USB power source. The Piluyaa Open Ear charges through its case over USB-C, with no jack or wired audio path involved. If your phone has no headphone jack and you want to charge and listen at once, the caojunzhen 1 splits one USB-C port into charging, a 3.5mm jack and a USB-C headphone jack.
is fast charging bad for headphones
Not inherently, as long as the device manages voltage and current properly. The caojunzhen 1 has a built-in chip that identifies the voltage and current different devices need and keeps them stable to protect your device. The Piluyaa Open Ear simply specifies a 1.5-hour USB-C recharge for its case.
how to fast charge bose headphones
This page doesn't cover Bose models, and neither product here is made by Bose. The general rule still applies: use the manufacturer's recommended charger and cable. For the two products compared here, the caojunzhen 1 relies on a PD wall charger for its 60W fast charging, while the Piluyaa Open Ear charges its case in 1.5 hours via USB-C.
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