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Cygolite Expilion 680 USB Bicycle Headlight
More product info
From Cygolite
This report was last updated 11/30/2022.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
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Report Info:
Note: We only analyze "reviews" and ignore one-tap "ratings".
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Report Card
Pass Overall Grade
FAIL 
Unverified Purchases
Unverified PurchasesFAIL Suspicious Reviewers
Suspicious ReviewersPASS Rating Trend
Rating TrendPASS Word Count Comparison
Word Count ComparisonPASS Phrase Repetition
Phrase RepetitionPASS Overlapping Review History
Overlapping Review HistoryPASS Reviewer Ease
Reviewer EasePASS Brand Repeats
Brand RepeatsPASS Incentivized Reviews
Incentivized ReviewsPASS Deleted Reviews
Deleted ReviewsN/A Reviewer Participation
Reviewer Participation
Most Trusted Reviews
I am retired and I ride an adult tricycle twice ... [Go to full review]
Sep 15, 2013
100%
TRUST
TRUST
-
Verified Purchaser
-
Easy Grader (avg. rating: 4.6)
Overlapping Review History: reviewed 1 of 9 top products
Brand Repeater (2 of 21 reviews for this brand; avg rating: 5.0)
Least Trusted Reviews
I use this bike as an aux helmet light when ... [Go to full review]
May 23, 2015
0%
TRUST
TRUST
-
Unverified Purchaser
-
Take-Back Reviewer (1 deleted Review; avg. rating: 5.0) -
Critical Reviewer (avg. rating: 2.9)
Contains repetitive phrases 
One-Hit Wonder
Analysis Details
Fail Unverified Purchases
Unverified Purchases
35 of the 569 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 3.8 while the verified purchasers have rated this product an average of 4.6. 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.
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.
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 3.3 while the reviewers who have posted more than one review have rated this product an average of 4.6. 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.
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 4.7 while the reviewers who don't have any deleted reviews in their history have rated this product an average of 4.4. 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
-
- <10%
- Created on high-volume days
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 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:
Show MoreShow Less
~2% of reviews
(5.0/5)
(5.0/5)
~3% of reviews
(4.3/5)
(4.3/5)
~4% of reviews
(4.5/5)
(4.5/5)
~3% of reviews
(4.3/5)
(4.3/5)
~2% of reviews
(5.0/5)
(5.0/5)
~2% of reviews
(4.0/5)
(4.0/5)
~2% of reviews
(5.0/5)
(5.0/5)
~2% of reviews
(5.0/5)
(5.0/5)
~2% of reviews
(4.5/5)
(4.5/5)
~2% of reviews
(4.5/5)
(4.5/5)
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 Overlapping Review History
Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
<10% also reviewed:
Frieling Double-Walled Stainless-Steel French... by Frieling
<10% also reviewed:
Finish Line DRY Teflon Bicycle Chain Lube,... by Finish Line
<10% also reviewed:
Amazon Store Card by Synchrony Bank
<10% also reviewed:
BlueRigger Digital Optical Audio Toslink Cable... by BlueRigger
<10% also reviewed:
Continental Gatorskin Bike Tire - DuraSkin... by Continental
<10% also reviewed:
LEZYNE CNC Travel Drive Floor Pump (Black, One... by LEZYNE
<10% also reviewed:
UltraFire 7w 300lm Mini Cree Led Flashlight Torch... by ULTRAFIRE
<10% also reviewed:
Hugo by Chloë Grace Moretz
<10% also reviewed:
Allen Sports Deluxe Steel Child Trailer by Allen
Approximately 20% of reviewers have substantial overlapping product review history. 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 4.2, while the average ease score for reviewers in this category is 4.2.
4.2 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.
-
- <10%
- Admitted to receiving an incentive
We didn't detect any reviews that used language indicating they were incentivized.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Pass Deleted Reviews
Deleted Reviews
- 0
- Reviews have been deleted
We have not discovered any deleted reviews for this product.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
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.