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Amazon.com > Beauty & Personal Care > Shave & Hair Removal > Men's > Electric Shavers > Foil Shavers
Panasonic Electric Razor for Men, Cordless Wet Dry Lightweight Shaver with Ergonomic Grip, ES3831K,...
More product info
From Panasonic
This report was last updated 11/22/2022.
Refresh the report to view the most up-to-date data available:
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Note: We only analyze "reviews" and ignore one-tap "ratings".
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Top products in Foil Shavers with authentic reviews:
Report Card
Pass Overall Grade
FAIL 
Deleted Reviews
Deleted ReviewsFAIL Suspicious Reviewers
Suspicious ReviewersFAIL Overlapping Review History
Overlapping Review HistoryPASS Rating Trend
Rating TrendPASS Unverified Purchases
Unverified PurchasesPASS Word Count Comparison
Word Count ComparisonPASS Phrase Repetition
Phrase RepetitionPASS Reviewer Ease
Reviewer EasePASS Brand Repeats
Brand RepeatsPASS Incentivized Reviews
Incentivized ReviewsN/A Reviewer Participation
Reviewer Participation
Most Trusted Reviews
I was very pleased with this shaver. It is very ... [Go to full review]
Oct 31, 2022
100%
TRUST
TRUST
-
Verified Purchaser
-
Easy Grader (avg. rating: 5.0)
Take-Back Reviewer (5 deleted Reviews; avg. rating: 3.6)
Least Trusted Reviews
Not to good [Go to full review]
Mar 28, 2016
0%
TRUST
TRUST
-
Unverified Purchaser
-
One-Hit Wonder -
Never-Verified Reviewer -
Critical Reviewer (avg. rating: 1.0)
Brand Monogamist (2 reviews for this brand; avg rating: 4.0)
Contains repetitive phrases 
Brand Repeater (2 of 28 reviews for this brand; avg rating: 4.5)
Overlapping Review History: reviewed 1 of 9 top products
Analysis Details
Fail Deleted Reviews
Deleted Reviews
We discovered a total of 98 deleted Reviews for this product, with an average rating of 3.7. Even though deleted reviews don't affect the average rating, the fact that action was taken to delete reviews raises some red flags about the integrity of the reviews for the product as whole.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
- We don't have a magic ability to collect every single deleted review; we can only identify reviews as deleted if we collect them on one date and then notice they are no longer visible on a subsequent date.
- We have no information on reviews that were never published in the first place.
- We also don't know why these reviews were removed. It could be action from the platform, personal decision by the review author, part of an entire account closure, even some data error on our part, etc.
3.7 average rating of deleted reviews
Fail Suspicious Reviewers
Suspicious Reviewers
One-Hit Wonders
Less than approximately 10% of reviewers have only reviewed this product. The One-Hit Wonders have rated this product an average of 1.7 while the reviewers who have posted more than one review have rated this product an average of 3.9. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Take-Back Reviewers
Approximately 40% of reviewers have had at least one of their past reviews for another product deleted. The Take-Back Reviewers have rated this product an average of 4.3 while the reviewers who don't have any deleted reviews in their history have rated this product an average of 3.3. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Fail Overlapping Review History
Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
<10% also reviewed:
Opinel No.10 Stainless Steel Folding Knife with... by Opinel
<10% also reviewed:
Opinel Knives 11040 2 5/8" N4 Carbon Steel... by Opinel
<10% also reviewed:
STORY OF SHANGHAI Womens 100% Mulberry Silk Head... by STORY OF SHANGHAI
<10% also reviewed:
Waterpik Ultra Water Flosser by Waterpik
<10% also reviewed:
Mr. Long Arm 3204 Pro-Pole Extension Pole by Mr. Long Arm
<10% also reviewed:
All-New Fire HD 10 Tablet with Alexa Hands-Free by Amazon
<10% also reviewed:
Pioneer SP-BS22-LR Andrew Jones Designed... by Pioneer
<10% also reviewed:
Handsfree Bluetooth Car Kit AUTO Power ON Visor... by yunjing
<10% also reviewed:
RK ROYAL KLUDGE RK61 Wireless 60% Triple Mode... by RK ROYAL KLUDGE
Approximately 15% of reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.4 while the reviewers who have a more unique product review history rated this product an average of 3.6. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Pass Rating Trend
Rating Trend
We didn't notice any signals that would indicate reviews were created unevenly over time.
Read more about our Rating Trend test.
Read more about our Rating Trend test.
Pass Unverified Purchases
Unverified Purchases
147 of the 7,470 total reviews for this product are unverified purchases. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Unverified purchases may be the result of Kindle Unlimited readers, buyers who didn't pay full price, or reviewers who did not purchase the product at Amazon. Read more about our Unverified Purchases test.
Pass Word Count Comparison
Word Count Comparison
-
- <10%
- Have an overrepresented word count
We didn't find any review word count groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Word Count Comparison test.
Read more about our Word Count Comparison test.
Pass Phrase Repetition
Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
Common Phrases in Reviews:
~4% of reviews
(5.0/5)
(5.0/5)
Common Phrases in Titles:
~4% of reviews
(2.5/5)
(2.5/5)
Less than approximately 10% of reviews use substantial repetitive phrases between them. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Reviewer Ease
Reviewer Ease
The ease score is the average rating for all reviews that a given reviewer submits. The average ease score for reviewers of this product is 3.8, while the average ease score for reviewers in this category is 4.2.
3.8 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeats
Brand Repeaters
Approximately 15% of reviewers have reviewed other products for this brand. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Incentivized Reviews
Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
Less than approximately 10% of reviews admitted to receiving a free or discounted product in exchange for a review. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.