Meet the world's first temperature-controlled mug, designed to keep coffee and other hot beverages at your ideal sipping temperature. Adjust the heat with Ember's mobile app – or opt for the handy preset of 135°F. The smart mug's integral battery maintains your chosen temperature for 80–90 minutes (depending on mug size). For all-day use, simply keep your mug on the charging coaster.

Smart LED feature on mug and Ember's mobile app indicate when beverage is ready to enjoy.
State-of-the-art mobile app also lets you adjust temperature, add customized drink presets and more.
Auto Sleep function senses when to turn heating on and off.
Built-in battery maintains perfect sipping temperature.
Includes convenient charging coaster.

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.

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.

Within 30 days, you may return most items 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). Please note that returned items must be in new condition.

Returns of kitchen electrics and cutlery (knife sets, single knives, cutting boards, knife sharpeners and knife storage) may require extra information and safety instructions. To initiate your return, please contact us at 888.922.4108 or visit us at your local store.

We cannot accept returns on monogrammed, personalized, special-order items, custom upholstery, food or on items damaged through normal wear and tear. Final sale items ending in .97, .98 or .99 cannot be returned. We also cannot accept returns of any food products, which are considered final sale items.

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.