Roll Over Image to Zoom
Share Your Style   |   #mywilliamssonoma Add a Photo

Breville Smooth Wave Microwave

Sugg. Price $525 Our Price $349.95
  • Free Fast Shipping

Easy, hassle-free returns online and in-store for eligible items.

Learn More

Earn 5% Back in rewards4 plus free standard shipping3every day when you shop with your Williams Sonoma credit card at Williams Sonoma.

Apply Now Learn More

Take the guesswork out of warming, reheating and defrosting with a microwave that automatically adjusts the power and time to suit the food you're cooking. Power Smoothing™ Inverter technology ensures smart, even cooking with the simple press of a Smart button, while Sensor iQ technology automatically sets the ideal power and time for delicious, even results. A soft-close door, Breville sound suite and mute button significantly reduce noise; a child lock option ensures safety.

  • Smart Cook, Smart Defrost, Smart Reheat functions let you choose from a range of common foods with predetermined times and power levels.
  • Sensor IQ automatically detects humidity and calculates time accordingly, so you don't need to select cooking time or power level.
  • Engineered and constructed for quiet operation with fourth-generation inverter and patented Soft Close door system.
  • Shortcuts menu behind door includes Popcorn, Beverage, Pizza, Melt Chocolate, Soften Butter and other popular settings.
  • Power and time can be adjusted during heating as needed.
  • A Bit More button lets you add a little extra cooking time.
  • +30 Instant Start button adds 30-second increments to cooking time.
  • Other features include self-locating turntable, kitchen timer, clock display, volume control and unit weight conversion.
Dimensions & More Info
  • Model # BMO850BSS1BUC1
  • Stainless-steel housing with brushed stainless-steel door and control panel.
  • 19" X 20 1/2" X 9" high (exterior).
  • 13" x 13" x 9" high (interior).
  • 1.2-cu.-ft. cap.
  • 26 lb. 3 oz.
  • 1250W.
  • This product is intended for use in the United States and Canada and is built to United States electrical standards.
  • Designed and engineered in Australia, made in China.
Use & Care


  • Do not build in or enclose microwave in a cabinet or confined space.
  • The outside surfaces should be cleaned with a damp cloth.
  • Wipe internal walls with a damp cloth. If very dirty, a mild detergent can be used. Avoid the use of spray and other harsh cleaners.
  • Do not allow the control panel to become wet. Clean with a soft, damp cloth.
  • Wash the glass turntable as needed in warm soapy water, rinse in clean water and dry thoroughly.

Shipping Information

UPS can deliver most in-stock items within 3–5 business days. UPS is unable to deliver to P.O. boxes.

Shipping Rates

The shipping rate varies depending on your order total and shipping destination. View Shipping Options and Charges.

Next Day Delivery

For an additional charge of $26 per address, we can expedite delivery to most destinations. This service is not available for some oversize items, items shipped directly from the supplier (including perishable and custom-manufactured items), out-of-stock items and items to be shipped outside the contiguous 48 states.

Orders received by 9:00 p.m. ET Monday through Thursday will arrive the next business day; orders placed Friday through Sunday will arrive on the following Tuesday.

Return Policy

At Williams Sonoma, we take great pride in the quality and craftsmanship of our products. Attention to design, materials, safety and construction are our priority. Upon receipt, please inspect your purchase and notify us of any damage; we will arrange for a prompt replacement.

If within 30 days, you are dissatisfied for any reason, you may return your purchase for a refund of the merchandise value. An original receipt or gift receipt is required for all returns and exchanges. Returns with a gift receipt will be refunded in the form of a Merchandise Credit for the amount indicated on the gift receipt. Returns with original receipt will be refunded in the original form of payment, cash and check refunds over $100 will be issued as a company check (may take 14 business days from time of request).

For all cutlery returns (knife sets, single knives, cutting boards, knife sharpeners and knife storage), please contact us at 888.922.4108 to initiate the return.

We cannot accept returns on monogrammed, personalized, special-order items, custom upholstery, food, items shipped direct from the vendor or on items damaged through normal wear and tear. Final sale items ending in .97 or .99 cannot be returned.

Made to Order and Final Sale Furniture items are non-returnable and cannot be cancelled once the order is placed.

For returns of items purchased from your Williams Sonoma Gift Registry, we will gladly provide a refund or exchange for the merchandise within 90 days of your event or within 90 days of purchase, whichever date is later. View Full Returns Policy.

  • Rated 5 out of 5 by from Great product I absolutely love this microwave. It makes all other microwaves seem outdated. It is super intuitive, very sleek in design and most importantly.... it cooks fantastically. I've yet to make anything that wasnt done or done on the outside but the inside. Great product. [This review was collected as part of a promotion.]
    Date published: 2019-11-19
    Rated 5 out of 5 by from Very quiet door I love how quiet the door is! No loud clanging or clicking when shut. I had to double check the first few times to be sure it was shut. While cooking, its silent also. The fan noise is minimal. The preset features are cool. Tried it first to reheat a pasta dish and adjusted automatically to ensure it was completely reheated. It takes some getting used to, but its easy to maneuver. It is also easy to clean and wipe down (but I found I haven't had too much issue with splattering or popping). [This review was collected as part of a promotion.]
    Date published: 2019-11-17
    Rated 5 out of 5 by from Amazing This is such an awesome microwave. The technology seems very upgraded and higher quality compared to other microwaves I’ve used. Food heats up evenly and quickly. The microwave itself is extremely sleek and stylish looking in the kitchen. I’ve had guests comment on it that they are loving the design. It is also more quiet than others I’ve had. Highly recommend this. [This review was collected as part of a promotion.]
    Date published: 2019-11-10
    Rated 5 out of 5 by from Microwaving Coffee has never been so easy! I said that I would never be one of those people that Microwaves coffee, but then I had three kids! One of the best parts of this unit are the present buttons to easily warm up beverages (it even give you the option to select how many cups you are warming up), heat up pizza, melt chocolate, perfectly melt butter, etc. It is also very easy to dial in the time and power for the thing you are microwaving. I also like that you can control the loudness of the chime. If you have kids and don't want to wake them with obnoxious noises, this unit can help. Overall this is a very high-end microwave that is easy to use and evenly heats up food. [This review was collected as part of a promotion.]
    Date published: 2019-11-07
    Rated 5 out of 5 by from smart microwave this is the one i got the Breville The Smooth Wave smart Microwave because i am always looking for the lastest brand and product that comes out especially for my kitchen anything to make cooking easier and faster so who would not want a smart microwave and let me tell you this did not disappoint. I absolutely impressed with its Sensor IQ tech. I was honestly surprised at the versatility of this oven. It comes with several cooking presets including a preset for bacon which get used alot in this house . I love the sleek look of this microwave and not having buttons to push love the two knobs .And i absolutely love that it heats the food evenly no cold spots even when you put something over the food to stop it from splattering all over the inside of the microwave. [This review was collected as part of a promotion.]
    Date published: 2019-11-04
    Rated 5 out of 5 by from Superior Quality Breville has done it again! I am astounded with the quality of this microwave. Not only is this visually appealing but the performance is amazing. This is not your normal microwave. Everything I have heated has came out evenly heated. No over cooked areas and no cold areas- just an even heat! When using it to thaw frozen meat again evenly thawed and no areas over heated or cooked! It is very quiet while in use and closing the door is the same. No more slams or bangs! [This review was collected as part of a promotion.]
    Date published: 2019-11-04
    Rated 5 out of 5 by from wow! i'm so impressed I'm beyond thrilled to be writing this review. I took some time to test out the features and all I can say is that this is the microwave of your dreams. It's super easy and extremely convenient. the smart technology lets you defrost, reheat with the preset controls. fun, isn't it. you don't have to think how much time it would take to defrost a particular item. take out the guess work and throw it out of the kitchen. next, I like the shortcut buttons. craving popcorns? simply place the bowl with corns and select the preset. voila! popcorns ready in minutes. reheating pizza is no fun but with the smart technology this microwave uses, it evenly reheats the pizza and doesn't make it soggy. It is beautifully made and it has enhanced the look of my kitchen. it's spacious from inside and I have noticed that the dishes don't splutter if they have been kept for a bit longer to be reheated. it's easy to clean and to be honest I have used it a handful times now and not once I have noticed any smell of the previous food in it. I'm extremely impressed with the overall performance, design and energy consumption of this microwave and I highly recommend it. [This review was collected as part of a promotion.]
    Date published: 2019-11-04
    Rated 5 out of 5 by from Better than I hoped for I got this microwave after renovating my kitchen. This microwave is precise, and has a great gentle close door. Its big, but not too big and cooks popcorn perfectly. Something that no other microwave that i have owned has ever done. :) [This review was collected as part of a promotion.]
    Date published: 2019-11-04
    • y_2020, m_1, d_19, h_17
    • bvseo_bulk, prod_bvrr, vn_bulk_3.0.4
    • cp_1, bvpage1
    • co_hasreviews, tv_0, tr_11
    • loc_en_US, sid_breville-smooth-wave-microwave, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_williamssonoma
    • bvseo_sdk, java_sdk, bvseo-4.0.0
    • CLOUD, getReviews, 10ms
  • Does the Breville Smooth Wave microwave have a 30 second option?

    Asked by: Libby
    The Breville® BMO850 Smooth Wave™ Microwave has a '+30 second Instant Start' button. Each press of the button will add an additional 30 seconds.
    Answered by: Breville Consumer Support
    Date published: 2019-12-14

    Does this Breville have a light inside?

    Asked by: marcfrancois
    Yes, the Breville® BMO850 Smmoth Wave™ Microwave does have an interior light.
    Answered by: Breville Consumer Support
    Date published: 2019-12-10

    What are the correct exterior dimensions for the Breville Smooth Wave Microwave? There are differing figures listed here and in "which Breville microwave is right for you?" sheet. Thank you.

    Asked by: Gardener
    The interior dimensions of the Breville® BMO850 Smooth Wave™ Microwave are - Internal capacity 1.2 cu.ft-- 13” (W) x 9” (H) x 13” (D)
    Answered by: Breville Consumer Support
    Date published: 2019-12-21
    • y_2020, m_1, d_19, h_17CST
    • bvseo_bulk, prod_bvqa, vn_bulk_3.0.4
    • cp_1, bvpage1
    • co_hasquestionsanswers, tq_3
    • loc_en_US, sid_breville-smooth-wave-microwave, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_williamssonoma
    • bvseo_sdk, java_sdk, bvseo-4.0.0
    • CLOUD, getContent, 11ms

Find & Pick a Store

Tap here to close

The location you specified seems to be incorrect. Please enter a valid address or ZIP code.

Stores Nearby:

  • Populating store list please wait.

There are no stores within miles of you.

Try entering a new location or adjusting the distance.

Prices and promotions may vary in stores. We make every effort to give you current product availability information, but our store inventory is always changing so an item's availability cannot be guaranteed.