CES 2026: This knife secretly vibrates when you cut with it

I spent part of my Sunday night at CES 2026 chopping vegetables at the Open press event booth. But this wasn’t your average cooking demo: My knife vibrated whenever I cut a tomato.

This may sound like a twist Cutthroat Kitchen challenging, but trust me – it’s more effective than it sounds. Debuting this month from Seattle-based cutting startup Ultrasonics, the C-200 UltraSonic Chef’s Knife has an orange button on its handle that makes its 8-inch blade vibrate about 30,000 times per second. This allows it to slice food more smoothly than a regular knife, and prevents crumbs from sticking to the gum. It should not need to be sharpened very often.

Impressively, the C-200 only moves a distance of 10 to 20 microns when it vibrates — a quarter of the width of a grain of salt, according to a PR representative — so you can’t see or hear it moving at all. It looks and handles like a standard chef’s knife, albeit one on the longer side. The only reason I’m sure the Seattle Ultrasonics wouldn’t wear me with a normal knife is because it occasionally made a shrill sound when used wet. It’s the same high-pitched sound a wine glass makes when you run a wet finger along its rim.

I can’t say that the C-200 worked much better than the nice new chef’s knife I just got for Christmas, but it cut like a dream. I had no problem getting it to cut paper-thin slices of tomato with a light touch. A Seattle Ultrasonics rep likened riding a bike to riding an e-bike because it makes the experience less intense.

Vibration aside, it’s just a decent looking knife.
Credit: Haley Henschel / Mashable

The IC-200 has been six years in the making, and the company says it’s the first ultrasonic knife on the market designed for home use. Commercial options are expensive and large; something much smaller is the size of a shoebox. In order to store the small C-200, its circuit board had to be folded in on itself inside the handle.

The IC-200 can be paired with a mahogany wireless charging pad (not pictured).
Credit: Haley Henschel / Mashable

The IC-200 is IP65 rated for water resistance, meaning you can hand wash it like any other chef’s knife. Its removable battery is rechargeable via USB-C.

The first production run of the C-200 sold out begins shipping later this month, and its second batch of pre-orders is now live on the Seattle Ultrasonics website ahead of a March release. It costs $399 on its own and $499 for its mahogany wireless charging pad, so it’s decidedly a splurge for serious home cooks. In its defense, some Japanese chef’s knives are quite expensive as well don’t do it vibrate.

Go to the Mashable CES 2026 hub for the latest news and live updates from the biggest tech game, where Mashable reporters report live.