Knife and Charger Bundle

The handle contains the battery, circuit board, and the working parts of a commercial ultrasonic food cutter — all miniaturized to fit a kitchen knife. So there's no room for a full tang. However, we poured significant engineering into the blade-handle connection to make sure it holds up to real kitchen use. How much force can the connection actually take? We attached the knife to a robotic arm and applied over 50 lbs. of downward force — more than two human arms can generate. 

If you regularly split lobster shells or hack through frozen meat, keep a cleaver handy. For everything a chef's knife is designed to do, the structure is sound.

The knife is IP65-rated, meaning it's protected against sustained water jets from any direction. Rinse it under the tap. Wash it under running water. It's designed for kitchen conditions. That said, we'd steer you away from the dishwasher — not just for the electronics, but because high-heat dishwasher cycles are hard on any high-quality knife blade. The knife also comes with a 1-year warranty, so you can buy with confidence.

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.

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.

Yes — the C-200 has a conventional AUS-10 steel blade. Sharpen it the same way you'd sharpen any high-quality Japanese knife. Whetstones, fixed-angle sharpening systems, and rolling sharpeners are great. We don't recommend pull-through sharpeners or electric sharpeners, as they can be far too aggressive in removing material. 

Also, keep the ultrasonics off when resharpening to avoid damaging the blade and your sharpening equipment.

The Wireless Charging Tile functions as both a charger and an elegant, magnetic storage mount for your knife. It contains its own internal battery and a Qi wireless charging coil, just like the kind your phone uses to wirelessly recharge. Set the knife on the tile with the blade pointed either to the left or the right-your choice, and magnets in the block will hold the knife securely to the Charging Tile. When the knife's battery is full, charging will stop automatically.

More than 20 minutes of continuous ultrasonic operation. In practice, that covers most home cooking sessions — you're not pressing the button the whole time, just when you're actively cutting. For a typical weeknight dinner prep, most people use the ultrasonic function for 3–5 minutes total. If you keep the Wireless Charging Tile on your counter, the knife is essentially always charged. The tile holds enough charge to recharge the knife 8–10 times before the tile itself needs a charge.

No - one of the benefits of the Charging Tile is that it's cord-free in daily use, just like your knife. You only need to plug in the tile occasionally to recharge its internal battery. The rest of the time, you can place the tile wherever is convenient (counter, wall, or drawer) without any cord.

When the Wireless Charging Tile is charged up, it holds enough power to fully recharge the knife about 8-10 times before the tile itself needs recharging. In normal home use, that translates to weeks of use between having to plug the tile in. When the Charging Tile's battery is running low, the light will flash red. Plug it in any time to recharge it (via USB-C, cable & charger not included).