Panasonic Microwave Oven NN-SN686S Stainless Steel Countertop/Built-In with Inverter Technology and Genius Sensor, 1.2 Cubic…
Best for
Best overall
Amazon rating
Amazon aggregate, one input among many in the Verdict Score
Based on 1 trusted source
Current price
$259.95
Updated May 15, 2026 · 1 min read
Sources behind this verdict
11 reviewers weighted by source trust
The consensus
What reviewers found
Synthesized across the trust-weighted source mix below.
Across the reviewers we read, the Panasonic NN-SN686S is the closest thing to a default recommendation in the countertop inverter category. Consumer Reports rated it as excellent on their heat-evenness test using a bowl of mashed potatoes, which is the measurement that most directly predicts whether reheated leftovers come out edible or with cold centers and scalded edges. r/Cooking and r/CountertopConfessions threads echo this in plain language: the inverter at power level 5 or 6 reheats without the popping and rubbery edges that pulsed-power microwaves produce.
What reviewers liked
- Consumer Reports rated heating evenness as excellent on its standardized reheat test
- Specialist-subreddit consensus on r/Cooking confirms the inverter genuinely reduces popping and uneven reheating at reduced power
- Genius Sensor auto-cook praised by verified-purchase reviewers as actually accurate, not a marketing gimmick
- 1,200W output is on the higher end for its 1.2 cu. ft. footprint
- Strong Amazon volume (8,400+ reviews) at a 4.3 average corroborates the expert testing
Where it falls short
- r/Appliances threads repeatedly cite interior paint bubbling and peeling past the two-year mark
- Stainless-steel exterior shows fingerprints easily per verified-purchase reviewers
- At $260 it sits well above budget countertop options without offering convection or air-fry
- Some r/CostcoCanada commenters note it heats slower than non-inverter units at full power
Across the reviewers we read, the Panasonic NN-SN686S is the closest thing to a default recommendation in the countertop inverter category. Consumer Reports rated it as excellent on their heat-evenness test using a bowl of mashed potatoes, which is the measurement that most directly predicts whether reheated leftovers come out edible or with cold centers and scalded edges. r/Cooking and r/CountertopConfessions threads echo this in plain language: the inverter at power level 5 or 6 reheats without the popping and rubbery edges that pulsed-power microwaves produce.
Verified-purchase reviewers at major retailers consistently flag two things: it's quiet for a 1,200W unit, and the Genius Sensor auto-cook actually works rather than being a marketing line. The 1.2 cu. ft. capacity is the sweet spot most mainstream reviewers point to, large enough for a dinner plate but small enough to not dominate a counter.
The honest pushback comes from r/Appliances, where multiple threads cite interior-paint bubbling and peeling on Panasonic units past the two-year mark. That's not unique to this model, but it's a real durability concern and the most common reason long-term owners say they wouldn't repurchase. Treat the inverter heating performance as the reason to buy and the cavity coating as the risk you're accepting.
- Panasonic Microwave
- This 1200 Watt high power, 1.2 cubic foot capacity stainless steel countertop/built in microwave delivers a seamless stream of cooking power for even cooking and delicious flavor.Turntable Diameter 340mm. Clock : 12H. Child Lock : Yes..Operating Frequency : 2,450 MHz
- Inverter Technology with Turbo Defrost
- Patented Inverter Technology generates a seamless stream of power and delivers consistent, evenly prepared food without overcooking; Advanced Inverter Turbo Defrost speeds up defrosting time
- Compact Design
- This countertop microwave with 13.4 inch turntable is thinner, lighter and more efficient, allowing you to devote less space to electronics and more to interior capacity; Internal dimensions (H x W x D): 9 15/16 inch x 13 15/16 inch x 14 3/8 inch
- Smart Cooking Settings with Genius Sensor
- Built in automatic genius sensor adjusts power and times based on different foods; Other advantages include 14 preset menu items, quick minute timer, delay start and child safety lock
- Keep Warm Feature
- This inverter microwave keeps soups, gravies or desserts warm and fresh until ready to serve. Power Source 120V / 60Hertz. Power Consumption 1480W. Membrane keypad and 5 menu buttons for easy programming, 10 Power Levels; push-button door release
- Highlight 6
- Panasonic kitchen appliances reflect Japan’s relentless innovation and high-tech heritage, delivering not only smarter, faster meals but also a seamless, elevated cooking experience you can taste in every bite.
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Design and Build The build quality struck me immediately. · Inverter Technology Performance · Ease of Use and Genius Sensor Cooking · Good Points.
On Amazon, there are literally hundreds of reviews specifically mentioning durability issues, specifically the interior paint bubbling, peeling, ...
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“Panasonic Inverter Microwave Oven NN” · SN686S REVIEW
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