C-200 Ultrasonic 8" Chef's Knife

Name: C-200 Ultrasonic 8" Chef's Knife
Brand: Seattle Ultrasonics
SKU: C-200
Price: 399.00 USD
Availability: InStock

C-200 Ultrasonic 8" Chef's Knife

The C-200 is the world’s first ultrasonic chef’s knife, designed specifically for home cooks. You can’t see the blade move, you can’t hear it when it’s on, and you can’t feel any vibration in the handle. But when you press the orange button, the knife cuts with up to 50% less effort, with less sticking, and easier cleanup. When it’s on, the blade vibrates over 40,000 times a second, making the knife behave sharper than it physically is. Made from Japanese AUS-10 steel hardened to 60HRC, it’s a great knife when it’s off, too.

Specifications:

Blade length: 200mm (8")
Steel: Japanese AUS-10 in three layer (san mai) construction.
Hardness: 60HRC
Edge angle: 13 degrees per side (26 degrees inclusive)
Battery: 1100mAh removable lithium-ion battery pack
Charging: USB-C, or with the Wireless Charging Tile
Water resistance: IP65
Operating frequency: 44kHz
Operating power: 10W
Includes: C-200 Ultrasonic Knife, removable Li-ion battery pack, user manual
To avoid e-waste, USB-C cable and charger not included.

$399.00

~~$399.00~~ $399.00

Sale Sold out

Pre-Order now for estimated shipping by January, 2026 (Batch 1). Cancel anytime before your order ships. What is a Pre-Order?

Warning: This product can expose you to lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov. What does this mean?

View full details

The World’s First

Ultrasonic

Chef's Knife

for home cooks.

Use it just like any other chef’s knife. Hold it in a pinch grip, smash garlic, or rock-chop herbs. Designed for both right- and left-handed users.

When this knife is on, ultrasonic energy vibrates the blade over 40,000 times per second. These vibrations – which can’t be seen, heard or felt in the handle– reduce friction, allowing for smoothercuts with less effort.

When the knife is on, it cuts with up to 50% less force.

It’s a great knife even when it’s off. The blade is made from san-mai or “three layer” Japanese AUS-10 steel with a hard, inner core that holds an exceptionally sharp edge.

The blade’s vibrations can also turn liquids into mist, especially at the tip. This lime juice isn’t being heated, it’s being atomized away as tiny droplets you can use to finish a cocktail.

FAQ

What generates the vibrations in the C-200?

The C-200 doesn't use any vibrating motors or magnets to generate its ultrasonic vibration. Instead, it uses PZT-8 piezoelectric ceramic crystals. This engineered ceramic material expands very slightly in one direction when an electric current is applied. In the C-200, these crystals make the blade resonate at ultrasonic frequency while directing energy into the blade rather than the handle.

Can you feel any vibration in the handle during use?

No - you won't feel the vibrations in your hand. Unlike, say, an electric toothbrush, the ultrasonic vibrations are not detectable in the handle and are isolated to the blade.

Is the battery removable?

Yes, the C-200's battery is user-removable. With the knife off and pointed away from you, grip the handle firmly with one hand while pulling the battery pack straight out to remove it.

Is an ultrasonic knife safe?

Yes. An ultrasonic knife isn't inherently more dangerous than any other sharp kitchen knife. You still have to be careful (it is a sharp blade!), but the C-200 can make cutting safer because you use less force and maintain more control than using a dull knife.