Still have a question? Send us a message.

Seattle Ultrasonics

<p>Barely. The operating frequency of the C-200 is 32 kHz and higher, which is well above the range of human hearing.&#xA0;<br><br>Under rare circumstances, knives may make an audible ringing sound if food or water accumulate in just the right spots, or if the knife is running in free air and is not in contact with food. Wiping the blade dry typically resolves the issue. But if it persists, you can <a href="https://tuneup.seattleultrasonics.com/" target="_blank" rel="noopener noreferrer">change your tuning frequency&#xA0;</a>to an alternate that doesn&apos;t produce the audible noise.</p>

Barely. The operating frequency is around 40 kHz, which is well above the range of human hearing.

Does it make noise?

C-200 Ultrasonic Knife

Technology

Is the knife dishwasher safe?

Is it waterproof?

Re-Tuning the C-200

Will I still need to sharpen the C-200?

Care and Maintenance

Purchasing

Shipping

Other

What does an ultrasonic knife do?

What generates the vibrations in the C-200?

Can you feel any vibration in the handle during use?

Will the sound bother dogs?

Does the C-200 knife use AI?

Does the C-200 have Bluetooth/WiFi connectivity?

Is an ultrasonic knife dangerous to use?

Where is the C-200 produced?

What kind of knife steel does the C-200 use?

How big is the C-200 knife?

Does the blade get hot when cutting with ultrasonics?

Is the C-200 knife a full-tang knife?

How long does the battery last and what is the battery life per charge?

Is the battery removable?

How do I recharge the knife's battery?

Why wasn't a USB-C charging cable included?

Do ultrasonic knives require less sharpening than regular knives?

How do I sharpen or resharpen the C-200?

Is the knife dishwasher-safe?

Is the knife waterproof?

Why does the knife contain lead (per the warning label)?

Can I travel with the C-200 knife on an airplane?

Do the ultrasonics make cutting onions worse?

Does ultrasonic cutting cause juices from meat, poultry, or seafood to mist?

Is this disability friendly?

What is the lifetime of the piezo ceramic crystals?

Are the ultrasonics dangerous for my skin?

What is the bevel on The C-200?

Do you have other handle designs?

How much does The C-200 weigh?

How big is the handle?

Troubleshooting the C-200

Why no full tang?

Does it work on dense vegetables, not just soft foods like tomatoes?

What about long-term reliability — electronics in a kitchen?

Does the C-200 interfere with hearing aids or headphones?

How does the Wireless Charging Tile work?

How many charges can the tile provide before it needs to be plugged in?

Does the Charging Tile need to stay plugged in?

Can I mount the Charging Tile to a wall?

Is the Charging Tile made of real wood?

Troubleshooting the charging tile

Wireless Charging Tile

Where can I buy the C-200 knife (and the Charging Tile)?

Will you ship to my country?

What about import duties or VAT fees for international orders?

How can I cancel my order if I change my mind?

What is your return policy?

What should I do if I receive a damaged or defective product?

Do you offer a warranty on the knife and tile?

Ordering & Payment

Where does my order ship from?

Do you ship to P.O. boxes?

Do you ship internationally, and are there any countries you don't ship to?

Can I change my shipping address after placing an order?

My order hasn't shipped yet. What is the status?

Shipping & Delivery

How do I contact customer support or get help with my product?

I'm a journalist or influencer and want to review the knife - who do I contact?

What is Seattle Ultrasonics as a company?

Is Seattle Ultrasonics related to any other knife brands or companies?

General / Other Questions

Does it make noise?Updated a month ago