Our take
Panasonic's paired-model operation manual explicitly covers NN-SD688S and documents Sensor Cook, Sensor Reheat, Inverter Turbo Defrost, a 1,300-W cooking output, separate 1,480-W input and an optional NN-TK529SF trim-kit route. It classifies the oven for household use and gives countertop clearances. The exact Amazon page identifies the NN-SD688S model and manufacturer part number, states 1.2 cu. ft. and lists a 13.5-in. tray and stainless-steel face; the manual itself does not state capacity, tray diameter or finish. Panasonic's support page for NN-SD688 without the S names a distinct 1.3-cu.-ft. model and is not used to fill those fields. The direct ASIN link is tagged.
A residential 1.2-cu.-ft. sensor inverter model for countertop use or a verified NN-TK529SF installation whose cabinet opening matches the manual..
This is not a commercial-duty choice. For a trim installation, do not proceed unless the NN-TK529SF instructions and the manual's exact cabinet opening fit your cabinet. Choose another model if its documented ventilation space is unavailable.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- The Panasonic manual directly documents Sensor Cook and Sensor Reheat, and separately describes Inverter Turbo Defrost.
- A 1,300-W cooking-output value and 1,480-W electrical input are listed separately for the NN-SD688S/NN-SD698S manual family.
- The manual specifies the optional NN-TK529SF trim kit and its cabinet opening, rather than implying that countertop instructions are built-in approval.
- The exact Amazon item details verify NN-SD688S as model and manufacturer part number for the directly linked ASIN.
What to weigh up
- The manual requires three inches at each side and one inch above for countertop placement, with unobstructed vents.
- The model manual does not provide nominal cavity volume or turntable diameter; the 1.2-cu.-ft. and 13.5-in. figures come from the exact Amazon page.
- The NN-TK529SF route has specific cabinet-opening dimensions that must be matched before installation.
- Panasonic's NN-SD688 page without the S suffix lists a different 1.3-cu.-ft. unit, so its features and status cannot be assumed for NN-SD688S.
The key details
| Model covered | NN-SD688S |
|---|---|
| Capacity | Exact Panasonic operating manual covers NN-SD688S separately from sibling NN-SD698S; Amazon item details identify NN-SD688S as both model and manufacturer part number for ASIN B001V7R5I6 |
| Microwave output | Amazon's exact-model title states 1.2 cu. ft.; Panasonic's combined S-model specifications give 1,300 W cooking output, separate 1,480 W input and 120-V/60-Hz supply |
| Cooking approach | Panasonic documents Sensor Cook, Sensor Reheat and Inverter Turbo Defrost; the panel has ten selectable power levels |
| Installation options | Manual lists outside dimensions 20 3/8 × 11 7/8 × 15 15/16 in. (W × H × D) and cavity dimensions 14 3/4 × 8 7/8 × 15 3/16 in. |
| Finish and turntable | The manual identifies optional trim kit NN-TK529SF; kit opening is 22 11/16 × 15 5/16 × 21 in. Amazon's exact page lists a 13.5-in. tray and stainless-steel face |
Performance figures are manufacturer claims. Source checked October 5, 2026. Regional models and included accessories can differ.
What the features mean for you
Keep NN-SD688S separate from similar model codes
The exact Panasonic manual cover lists Models NN-SD698S/SD688S and uses one operation booklet for those two distinct product codes. The Amazon page's item details name NN-SD688S as model and manufacturer part number and show the B001V7R5I6 ASIN, supporting a direct model link. Its product title identifies a 1.2-cu.-ft. stainless product; the item text specifies a stainless-steel face. Panasonic's support record called NN-SD688, without the terminal S, is a different page with a 1.3-cu.-ft. figure. Do not use that base-code record to change the NN-SD688S capacity or status.
Use the S-family electrical and size specifications
Panasonic's combined NN-SD688S/NN-SD698S specification table gives 1,300 W cooking power and 1,480 W power consumption at 120 V/60 Hz. It lists outside dimensions of 20 3/8 inches wide, 11 7/8 high and 15 15/16 deep, plus cavity dimensions of 14 3/4 by 8 7/8 by 15 3/16 inches. The manual does not give a cavity-volume or turntable-diameter figure. The exact Amazon title supplies 1.2 cu. ft. and its item copy lists a 13.5-inch tray; these remain attributed to the product listing rather than to Panasonic's specification table.
Choose documented sensor functions for the right food
This manual names separate Sensor Cook and Sensor Reheat functions and explains steam detection as the mechanism for timing the automatic functions. Sensor Cook has food-specific programs, while Sensor Reheat is described for cooked refrigerated foods and the manual lists exclusions such as drinks and frozen foods. These are more specific capabilities than a keypad with ordinary food presets. The model also includes ten power levels for manual cooking. Follow the operating instructions for suitable food categories and cover/standing guidance instead of assuming that every reheating task should use the sensor cycle.
Separate inverter defrost from sensor cooking
The operating manual describes Inverter Turbo Defrost as a weight-based program and documents it separately from Sensor Cook and Sensor Reheat. That is useful when comparing control routines: the inverter-defrost function does not itself prove sensor cooking, while the sensor functions are independently named in the control panel and instructions. The panel also provides manual power levels, Quick Min and Keep Warm. No claim about cooking performance or field testing is inferred from these documented functions.
Check both countertop space and the optional kit opening
For countertop use, the manual asks for three inches on both sides and one inch above the oven, keeping vents clear and avoiding placement near a hot or damp surface. The same booklet lists optional trim kit NN-TK529SF and gives a cabinet opening of 22 11/16 by 15 5/16 by 21 inches. That is model-family kit evidence, not a license to install the microwave without its correct kit instructions: verify the kit number, opening and ventilation requirements before cabinet work. If you are not using the documented kit, preserve the countertop clearances.
Treat the household classification as a hard boundary
The exact Panasonic manual says this microwave was made for household use only and was not approved or tested for mobile-vehicle, marine or commercial use. Those limits mean this is not documented for commercial use. The appliance can still be relevant to a professional home kitchen where a sensor function or optional trim kit matters, but that does not make it a foodservice microwave. Select a different unit if the application is commercial.
Use the exact-ASIN link with source limits visible
The Amazon item-detail table directly identifies model NN-SD688S and manufacturer part number NN-SD688S for ASIN B001V7R5I6, so the payload uses that exact link with buyershortlists-20. Product-page identity permits the direct destination; it does not replace Panasonic's operating manual as the main evidence for technical features. The 1.2-cu.-ft. title, stainless-face wording and tray diameter are explicitly attributed to the page. No buyer-review summary or current price/stock/offer claim is used.
What else to compare
If your cabinet does not fit the NN-TK529SF opening or the countertop clearances, compare a model with dimensions and an installation route that fit. For commercial cooking, use a microwave whose manufacturer explicitly approves that duty. If you need capacity or tray-size specifications from the maker rather than the exact Amazon listing, choose a model whose manual states them.
Before you buy
What output does the NN-SD688S manual list?
The combined NN-SD688S/NN-SD698S specification table lists 1,300 W cooking output separately from 1,480 W input.
Does the NN-SD688S have sensor cooking?
Yes. Panasonic's manual documents both Sensor Cook and Sensor Reheat, including guidance on steam detection and use limits.
Can the NN-SD688S be built into a cabinet?
The manual lists optional trim kit NN-TK529SF and a specific cabinet opening; verify the kit instructions and opening before installation.
How much ventilation space does countertop installation need?
The manual specifies three inches on both sides and one inch above, with vents kept clear.
What capacity and turntable size does it have?
The exact Amazon page states 1.2 cu. ft. and lists a 13.5-in. tray; Panasonic's manual does not state those two figures.
Is ASIN B001V7R5I6 the NN-SD688S model?
The Amazon item details show NN-SD688S as both the model and manufacturer part number for that ASIN.
Is the NN-SD688S for commercial kitchens?
No. Panasonic's exact manual says it is for household use only and is not approved or tested for commercial use.
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.
- Panasonic NN-SD698S/SD688S Operating Instructions and Cook Book ↗ — checked October 5, 2026.
- Panasonic-copyrighted NN-SD698S/SD688S operating manual. Cover names both distinct models; printed page 4 documents 3-in. side and 1-in. top countertop clearance, household-only classification, and correct trim-kit use; printed page 15 documents Sensor Cook and Sensor Reheat; printed page 28 gives the combined models' electrical output/input, dimensions and NN-TK529SF trim-kit/cabinet-opening dimensions. The manual does not state cavity capacity or turntable diameter. ↗ — checked October 5, 2026.
- Current exact Amazon page individually inspected 2026-10-05: item details show model NN-SD688S, manufacturer part number NN-SD688S, ASIN B001V7R5I6, countertop installation and residential use. Its exact product title lists 1.2 cu. ft.; item copy lists a 13.5-in. turntable and stainless-steel face. No buyer-review content, price or offer information is used. ↗Paid link · We may earn a commission. — checked October 5, 2026.
- Panasonic's NN-SD688 product guide omits the S suffix, lists 1.3 cu. ft. and states discontinued. It is evidence of a separate base-code model and is deliberately not used as NN-SD688S evidence. ↗ — checked October 5, 2026.
The decision
Panasonic's exact S-model manual documents 1,300-W output, two sensor functions, inverter defrost and a specific trim-kit option for NN-SD688S/SD698S. The NN-SD688S Amazon page directly verifies the model/ASIN and lists 1.2 cu. ft., stainless face and a 13.5-in. tray; those figures are attributed to that page because the manual omits them. The manual imposes household-use and ventilation limits.
Is it the right fit?
Check the exact model and today’s offers on Amazon.