Our take
Sharp R-320HW is a white 1.2-cu.-ft. countertop microwave with 1,200-W output, sensor controls and documented 120-V/60-Hz supply.
Choose R-320HW when output, sensor controls, white finish and a known 12 5/8-in. tray matter more than a 1.5-cu.-ft. cavity. Sharp R459YW offers 1.3 cu. ft. and 1,000-W output with a 12.75-in. turntable; R-320HW gives the smaller cavity but higher listed output. Both are standard-supply countertop models, and neither belongs in the large-cavity case..
Choose a larger model if 1.5 cu. ft. is required, or a different exact model if you need a documented optional trim-kit route.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- The exact code is tied to a white countertop model with sensor cooking.
- The manual distinguishes 1,200-W microwave output from 1,680-W/14.2-A input.
- The shared manual specifies U.S. supply and a 12 5/8-in. turntable.
What to weigh up
- Its 1.2-cu.-ft. cavity is smaller than models that meet the large-sensor cutoff.
- The exact-model record lists no optional built-in trim kit.
- Historical Amazon ASIN B0000CFH9S is not verified as a current exact-model listing.
The key details
| Model covered | R-320HW |
|---|---|
| Capacity | The exact-model record lists a 1.2-cu.-ft. cavity and white countertop finish. |
| Microwave output | Microwave output is 1,200 W; the shared manual separately lists 1,680-W / 14.2-A input. |
| Cooking approach | Sensor cooking, four defrost options, 11 levels and four programmable stages are documented. |
| Installation options | Countertop placement is documented; the exact R320HW record lists no optional trim kit. |
| Finish and turntable | The shared manual gives a 12 5/8-in. turntable and 120-V/60-Hz supply. |
Performance figures are manufacturer claims. Source checked October 11, 2026. Regional models and included accessories can differ.
What the features mean for you
Will the 1.2-cu.-ft. cavity suit your cookware?
Sharp's exact R320HW record lists a 1.2-cu.-ft. cavity and the shared operation manual supplies cavity measurements for the R-320HW/HK/HQ family. The volume is useful for comparing model classes, but a dish can still be too wide or too tall to turn. Sharp's shared manual lists a 12 5/8-in. turntable, which gives a more direct check for round dishes. Measure the base of the cookware and leave enough space for rotation before relying on the nominal capacity.
How does its output compare with input?
The manual lists 1,200 W of microwave output and separately lists 1,680 W / 14.2 A of electrical input. Output is the cooking-power label used in the finder; input and current matter for the electrical connection. Do not compare those two wattage figures as if they describe the same function. The output exceeds the finder’s soft 1,000-W preference, while the cavity remains below the separate 1.5-cu.-ft. hard requirement used by the large-sensor path.
What do the sensor controls and stages offer?
The exact-model page documents sensor cooking, and its specification table lists four defrost options and four programmable stages. Those controls provide more preset guidance than a simple time-only unit, but they do not show that every recipe will finish without checking. The manual's sensor settings are linked to the R-320H family; the exact R320HW code is the white variant covered by the exact-model record. Do not borrow cooking functions from a different Sharp model merely because its numbering is similar.
Is the white HW variant a separate product identity?
The exact model record identifies R320HW in white, while the same Sharp family includes the HK and HQ suffixes. The frozen source also names the HW code. Keep it distinct from R320HQ, which is a bisque variant already represented in the saved catalog. Finish can affect whether the appliance coordinates with surrounding equipment, and suffixes may change finish or kit support. Do not assign the HQ color or a kit detail to HW without exact documentation.
Can this model be built into a cabinet?
The exact R320HW record labels the appliance countertop style and lists no optional built-in trim kit. Treat countertop placement as the supported route in this guide. If cabinet installation is important, compare a model whose exact manual names an approved kit and specifies the opening, ventilation and electrical requirements. A shared brand or family resemblance does not establish trim compatibility. Confirm the model label before ordering accessories, especially when older Sharp codes differ by a single suffix.
How does it compare with Sharp R459YW?
Both models have sensor cooking and white finishes, but R-320HW lists a 1.2-cu.-ft. cavity and 1,200-W output, whereas R459YW lists 1.3 cu. ft. and 1,000 W. R459YW also lists a 12.75-in. turntable; R-320HW lists 12 5/8 inches. Those differences help a buyer balance cavity volume, tray fit and rated output without claiming a measured speed advantage. Both sit below the large-capacity threshold and have no optional trim route in their exact records.
What else to compare
Compare Sharp R459YW for 1.3 cu. ft. and a 12.75-in. tray, or choose a model with at least 1.5 cu. ft. when large capacity is mandatory.
Before you buy
What output and electrical input are documented?
The manual lists 1,200-W microwave output and separate 1,680-W / 14.2-A input.
Does R-320HW include sensor cooking?
The exact-model record documents sensor cooking and sensor settings for this white model.
What turntable size does the manual list?
The shared R-320H manual lists a 12 5/8-in. turntable.
Does it have a trim kit?
The exact R320HW record lists no optional built-in trim kit.
Where can I check the current price?
Use the Amazon link for current offers. Check the exact model, seller, product condition, delivery, and return terms. This page does not display a live price or confirm stock.
Sources & review basis
We use the following manufacturer documentation for the product features above. Our suitability notes and buying advice are editorial judgments based on those features, not measured performance results.
- Sharp R-320HW/HK/HQ operation manual and exact-model R320HW specifications ↗ — checked October 11, 2026.
- Exact-model Sharp R320HW record; lists white finish, countertop style, 1.2 cu. ft., 1,200-W output, sensors and no optional trim kit. ↗ — checked October 11, 2026.
- Sharp R-320HW/HK/HQ operation manual; lists shared 120-V/60-Hz supply, separate input, output, capacity and turntable measurements. ↗ — checked October 11, 2026.
The decision
R-320HW pairs a white 1.2-cu.-ft. cavity with 1,200-W output, sensor controls, a 12 5/8-in. tray and 120-V/60-Hz supply. Its documented route is countertop placement.
Is it the right fit?
Check the exact model and today’s offers on Amazon.