If you want a USB-C adapter that lets you take calls while charging, choose caojunzhen 1; if you need two magnetic charging cables for a compatible wearable, choose Vtyzcm 2-Pack. These products solve different problems, so the right choice comes down to what you need to connect—not a close contest in features.
For calls, caojunzhen 1 is the relevant option: it provides both USB-C and 3.5 mm audio connections alongside a USB-C charging port. Vtyzcm 2-Pack is for charging certain four-pin wearables and does not offer an audio connection for calls.
caojunzhen 1 vs Vtyzcm 2-Pack at a Glance
• Vtyzcm 2-Pack’s biggest strength: Two magnetic charging cables for compatible four-pin devices. Trade-off: Compatibility depends on the wearable’s pin count and contact spacing.
• For calls: caojunzhen 1 supports listening and charging at the same time through wired audio connections; neither product is described as a headset or microphone.
• For wearable charging: Vtyzcm is the relevant pick if your device has four charging pins spaced about 7.5–8 mm apart.
• Choose caojunzhen 1 if your priority is connecting wired headphones and a charger to one USB-C port.
• Choose Vtyzcm 2-Pack if you need spare or replacement magnetic cables for a compatible smartwatch, fitness tracker, or other listed wearable.
caojunzhen 1 is a compact USB-C adapter with three separate connection options: a USB-C port for charging, a USB-C headphone interface, and a 3.5 mm headphone jack. Its purpose is straightforward. It lets a compatible USB-C device provide wired audio and receive power at the same time, which can be useful for a call that runs long, a video meeting, or listening while charging.
The adapter supports PD charging up to 60W, with a PD wall charger recommended for fast charging. Its listed audio specifications include DAC support at 16-bit/192 kHz or 24-bit/96 kHz and ADC support at 16-bit/48 kHz. Those figures describe supported audio formats; they do not establish how a particular call will sound with every phone, headset, or app. The listing also says data transmission is not supported, so this is not a USB-C hub for file transfers.
I’d consider caojunzhen 1 if I wanted to keep wired headphones connected while charging a compatible phone or tablet. It may suit someone comparing the best open ear headphones for calls only if their open-ear headphones use one of its wired connections; the adapter itself is not an open-ear headphone. Skip it if you need a wearable charging cable, USB data transfer, or a standalone headset.
How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-22 · 6 min read · Independent comparison
The magnetic connection is designed to align with the charging contacts, and the cables include protection against over-voltage, over-current, and short circuits. The product information describes a flexible PVC cable with an ABS housing and says it has been tested for more than 5,000 bends. It also gives an approximate two-hour full-charge time, but actual charging time can depend on the wearable. The listed maximum voltage is 5 volts, and the connector is USB Type-A.
This is the practical option if you need a replacement or a spare for a wearable that matches the four-pin layout. Having two cables can make it easier to keep one at home and another at work or in a travel bag. Skip it if your device has a different number of contacts, a different spacing, or needs a USB-C audio adapter. It is a charging accessory, not a wired-call solution.
• Best for wired calls while charging → caojunzhen 1. It combines a USB-C charging port with two wired audio connection types, though the listing does not specify microphone performance for calls.
• Best for charging a compatible smartwatch or tracker → Vtyzcm 2-Pack. Its intended fit is four pins spaced around 7.5–8 mm apart.
• Best if you use 3.5 mm headphones → caojunzhen 1. It provides a 3.5 mm audio interface alongside USB-C audio and charging.
• Best if your headphones use USB-C → caojunzhen 1. The adapter includes a USB-C headphone interface, but it does not add USB data transfer.
• Best for a spare wearable charger → Vtyzcm 2-Pack. The package includes two cables, so one can serve as a backup if both fit the device.
• Best for flexible placement around a room or while traveling → Vtyzcm 2-Pack. Its compact cable format is intended for home, office, and travel use; fit still depends on the wearable’s contacts.
• Best for a charging setup that supports PD up to 60W → caojunzhen 1. A PD wall charger is recommended for fast charging, and the connected device also needs to support the relevant charging behavior.
• Best for a device that needs data transfer through the accessory → neither. caojunzhen 1 explicitly does not support data transmission, while Vtyzcm is described as a charging cable.
The key distinction is not a small feature advantage. It is the connection type. caojunzhen 1 adapts a USB-C port for wired audio and charging. Vtyzcm 2-Pack supplies magnetic power connections for compatible wearables. Before choosing Vtyzcm, check the actual contacts rather than relying on a general claim of universal fit.
There is a possible naming trap for shoppers searching for rotatable ear cups on-ear headphones for calls. Neither product is a headphone, and neither has ear cups. Likewise, someone looking for noise-canceling gaming headphones for calls should know that these products do not list noise cancellation or gaming-headset features. caojunzhen 1 can connect wired headphones to a USB-C device, but it does not turn them into a noise-canceling headset.
My Verdict
In my opinion, I’d choose caojunzhen 1 for calls because it lets a compatible USB-C device connect wired headphones and charging at once. That’s the more useful arrangement when a call may continue while the device needs power.
It provides wired audio connections and a USB-C port for charging at the same time. The listing does not specify microphone performance, so check that your headphones and device support calls through the connection you plan to use.
No universal fit can be assumed. The cable is intended for four-pin devices with contact spacing around 7.5–8 mm; check your wearable’s pin count and spacing before choosing it.
Only caojunzhen 1 is an audio adapter. Its listed DAC and ADC specifications describe supported audio formats, but they do not prove how every device-and-headphone combination will sound. Vtyzcm 2-Pack is a charging accessory, not an audio product.
These products do not provide both functions together. caojunzhen 1 supports wired audio and USB-C charging from one adapter; Vtyzcm 2-Pack provides two magnetic charging cables for compatible wearables. If you need both, you may need separate accessories, depending on your devices.
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