Our take
Sharp R-307NW is a white 1.0-cu.-ft. home-use countertop microwave with 1,100-W output, 120-V/60-Hz supply and a 12 5/8-inch turntable. Automatic menus do not establish sensor cooking; trim fit and current exact Amazon identity remain unverified.
Consider R-307NW if the white finish, documented 1.0-cu.-ft. cavity, 1,100-W output and 12 5/8-inch tray match your counter and cookware. Check that a dish clears the measured turntable and verify the W-suffix model label. The manual's 120-V/60-Hz rating and home-use classification are concrete boundaries; exact trim fit and current offer identity remain open..
If you need sensor cooking, built-in trim, or a commercial-duty rating, compare a model whose exact manual explicitly documents those requirements. R-307NW is most clearly differentiated by its white finish, 1.0-cu.-ft. capacity, 1,100-W output and 12 5/8-inch tray.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- Sharp's official R-307N/R-308N manual maps the W suffix to white, and an exact-model retailer page corroborates white R-307NW.
- The family manual lists a 1.0-cu.-ft. cavity, 1,100-W microwave output and a 12 5/8-inch turntable.
- Countertop placement and 120-V/60-Hz household supply are documented; the manual identifies the family as home-use equipment.
What to weigh up
- Automatic cook and reheat functions are documented, but the manual does not establish sensor cooking.
- No exact R-307NW trim route, separate input rating or branch-circuit requirement was established.
- The historical Amazon page returned a cache miss, so the current exact offer remains unverified.
The key details
| Model covered | R-307NW |
|---|---|
| Capacity | 1.0 cu. ft. cavity and 1,100-W output in Sharp's R-307N/R-308N family manual |
| Microwave output | 120 V/60 Hz household supply; 12 5/8-inch turntable |
| Cooking approach | White R-307NW suffix mapping; popcorn, automatic cook/reheat and defrost functions |
| Installation options | Countertop placement; no exact R-307NW trim-kit route was established |
| Finish and turntable | Automatic programs are documented, but sensor cooking is not confirmed |
Performance figures are manufacturer claims. Source checked October 5, 2026. Regional models and included accessories can differ.
What the features mean for you
Confirm the white suffix before comparing finishes
The Sharp family manual names the R-307N series and says the W suffix denotes white; the exact-model retailer page also identifies R-307NW as white. That is a model-level finish crosswalk, unlike relying on the frozen title, which does not include the code. Keep R-307NW distinct from the K finish and other R-307N variants, and check the nameplate on any listing before treating its photos or ASIN history as proof of this white model.
Match the cavity to the actual dish size
The manual gives a 1.0-cu.-ft. capacity and 12 5/8-inch turntable. These measurements answer different fit questions: cavity volume screens general load size, while the tray diameter limits the round base of a plate or container. Sharp's manual also directs the user to place the unit where counter space is available. Measure the cookware that matters and confirm it can rotate freely; capacity alone does not establish clearance for every bowl or rectangular dish.
Use cooking output and supply as separate checks
Sharp lists 1,100 W of microwave output and 120 V/60 Hz electrical supply. The output figure helps compare heating power, while the supply rating checks compatibility with the intended outlet. Do not infer input amperage from output wattage. The manual supplies neither a separate input rating nor an exact branch-circuit requirement in the cited table, so those details should be checked on the unit label and full instructions rather than calculated from the 1,100-W claim.
Do not equate automatic menus with a sensor
Sharp's manual documents popcorn, automatic cook/reheat and automatic defrost functions. These names describe programmed controls; the reviewed R-307N manual does not call them sensor cooking. Keep the sensor-matching field unknown until an exact manufacturer source identifies a sensor, instead of promoting an automatic menu into an unsupported feature. Buyers who value simple one-touch operation can still compare the documented controls directly and decide whether manual timing is also needed.
Keep the countertop and cabinet questions separate
The operation manual describes placing the oven where counter space is available. That supports countertop classification, but the sources reviewed do not list a model-specific trim kit or cabinet opening for R-307NW. Do not use a trim frame intended for a nearby Sharp model based on size or appearance alone. Follow the manual's ventilation and clearance directions, and leave compatibility unresolved unless Sharp supplies an exact R-307NW kit pairing.
Respect the home-use documentation and verify the offer
Sharp's warranty text calls the R-307N/R-308N family a home-use microwave. The manual therefore provides a meaningful duty distinction from models explicitly sold as commercial equipment. The frozen ASIN page returned a cache miss, and the exact-model Best Buy page does not establish a current Amazon offer. Search for R-307NW and confirm the white suffix, complete model label and condition; do not assume an archived ASIN resolves to this variant today.
What else to compare
Before you buy
What color does the R-307NW suffix identify?
Sharp's manual maps the W suffix to white, and an exact-model listing corroborates it.
What capacity and output does the manual list?
It lists a 1.0-cu.-ft. cavity and 1,100-W microwave output for the R-307N family.
How wide is the turntable?
Sharp's family manual lists a 12 5/8-inch turntable.
Is sensor cooking documented?
The manual lists automatic programs but does not identify this model as sensor cooking.
Can it be installed with a trim kit?
No exact R-307NW trim-kit pairing was established in the reviewed sources.
Is this classified for commercial duty?
Sharp's warranty text identifies the R-307N family as home-use equipment.
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-307N/R-308N exact-family operation manual ↗ — checked October 5, 2026.
- Sharp's official R-307N/R-308N manual maps suffix W to white, describes countertop placement and automatic cook/reheat and defrost, and lists 120 V/60 Hz, 1,100-W output, 1.0-cu.-ft. capacity and 12 5/8-inch turntable; its warranty calls the family home-use equipment. ↗ — checked October 5, 2026.
- Exact-model retailer page identifies white Sharp R-307NW; its unavailable new-condition status is not used as a current offer claim. ↗ — checked October 5, 2026.
- Historical exact-ASIN request returned a cache miss; current exact offer is unverified. ↗Paid link · We may earn a commission. — checked October 5, 2026.
The decision
Sharp R-307NW is a white 1.0-cu.-ft. home-use countertop microwave with 1,100-W output, 120-V/60-Hz supply and a 12 5/8-inch turntable. Automatic menus do not establish sensor cooking; trim fit and current exact Amazon identity remain unverified.
Is it the right fit?
Check the exact model and today’s offers on Amazon.