Amasuki Multi Charging Cable (USB-C/A PD20W) for Apple Watch & iPhone

What this is for

Amasuki’s multi charging cable is designed to simplify one annoying problem: keeping multiple devices powered without juggling different chargers or cables all day. On paper, it’s meant to work as a combined charging solution for both an Apple Watch charger setup and an iPhone charger setup, using a USB-C to USB-A charging block labeled PD20W.

If you’ve ever tried to “make do” with whatever cable is closest and ended up with loose connections or the wrong charging lead, this kind of multi charging approach can feel like a small upgrade to your routine—especially if you charge in the same spots at home, in the office, or when traveling.

Key takeaways (and what’s realistic)

The main idea here is straightforward: one multi charging cable aimed at compatibility across Apple Watch models (listed in the product name: Ultra/SE/10/9/8/7/6/5/4/3/2/1) and iPhones (listed: iPhone 16/15/14/13/12) plus Galaxy S23-4FT.

The PD20W mention matters because it signals the charger block you’d pair it with is intended for faster charging compared with basic lower-wattage setups. That said, the real-world result depends a lot on the device’s charging requirements and the exact power source you use. So, while it’s built for speed and convenience, it’s not magic—some devices may charge slower if their limit is lower.

Where it shines in daily use

This cable makes the most sense if you want one “grab-and-go” solution for a mixed device household.

For example: imagine you’re getting ready in the morning. You plug the multi cable into your PD20W USB-C/A block, connect your iPhone, then attach the Apple Watch portion when you’re switching tasks. If you keep your devices charging in the same corner of a desk or nightstand, fewer cables usually means fewer things to misplace—and fewer “which one goes to what?” moments.

It’s also the kind of cable that can be worth considering for travel, where keeping a compact charging kit matters more than having separate, device-specific leads.

What to know before you buy

A few practical things to double-check before committing:

• Compatibility lists are helpful, but they’re not the same as proof of perfect fit in every case. Since the product name is the only info provided for model coverage, double-check your exact watch and phone model and the connector type you currently use.
• The package is described around a USB C/A PD20W charging block. If your goal is “all-in-one with no extra charger,” you’ll want to confirm whether the charging block is actually included in what you purchase or if it’s only referenced as the intended power source. (The entry mentions the block, but it doesn’t explicitly confirm inclusion.)
• “Multi charging” is convenient, but it can be less ideal if you only charge one device. In that case, a simpler single-purpose cable might be more straightforward and easier to keep ready.

Is it a good match for you?

It’s a solid pick if you want one multi charging cable setup for Apple Watch and iPhone devices and you already plan to use a PD20W USB-C/A charging block for faster charging. You’ll appreciate it if you care about reducing cable clutter and you often charge multiple devices in the same daily routine.

It’s not the best choice if you need guaranteed, effortless compatibility across every edge case (older accessories, unusual connector setups, or you’re picky about exact fit) and you don’t want to spend a minute verifying whether your exact device model matches the product’s listed compatibility.

Pros

• Multi charging concept for both Apple Watch and iPhone charging use cases (based on the compatibility list).
• PD20W charging block reference suggests it’s aimed at faster charging rather than basic slow power.
• Designed to reduce cable clutter if you own multiple devices.

Cons

• The provided info doesn’t confirm what’s included in the box beyond describing a PD20W USB C/A charging block, so you may want to verify inclusion.
• Performance (how fast it charges) can be limited by your device’s own charging capabilities, so it may not always deliver the “fast charging” you expect.

Tech details

• Name: Multi Charging Cable for Apple Watch Charger iPhone Charger PD20W USB C/A Block Fast Charging
• Brand: Amasuki
• Type: Multi charging cable paired with a USB C/A PD20W charging block
• Compatibility (as listed): Apple Watch Ultra/SE/10/9/8/7/6/5/4/3/2/1, iPhone 16/15/14/13/12, Galaxy S23-4FT

Buying verdict

Worth considering if you’re building a simple charging routine for Apple Watch plus an iPhone and you’re already set up to use a PD20W USB-C/A charging block for quicker power delivery. Better avoided if you only need one device charged, or you want zero ambiguity about whether the charging block is included and how perfectly the connectors fit your exact model.

Quick checklist before you hit buy: confirm your exact phone/watch models match the listed compatibility, and verify whether the PD20W charging block is included or you’ll need to supply your own.

Mini FAQ

Does this cable charge both my Apple Watch and my iPhone?

It’s marketed for multi charging across Apple Watch models and iPhones listed in the product name, so the intent is to support both use cases.

Is the PD20W charging block included?

The description references a USB C/A PD20W charging block, but the provided info doesn’t explicitly confirm package contents. It’s worth verifying in the listing details.

Will it charge at the fastest possible speed?

The PD20W reference suggests fast charging support, but actual charging speed depends on the phone/watch model and the power limits of the device.

What if I only use one device?

If you only charge an iPhone or only charge a watch, a single-purpose cable may be less hassle than a multi charging setup.

Is it compatible with Galaxy S23?

The product name includes “Galaxy S23-4FT” in its compatibility list, but you should still confirm the exact device variant and connector needs for your setup.