About Us

Prüfengel offers authentic consumer tests in which real users share their experiences with products. Our tests are based on practical applications in everyday life and reflect the opinions of consumers. As we focus on consumer tests, we do not carry out any material, long-term or laboratory tests. The tests are carried out by 1-2 independent consumers over a period of 7-14 days. The exact test conditions can be viewed in the test plan of the respective test report – click here to go directly to the test plan.

Manufacturers provide the tested products free of charge. We charge a one-off test fee for carrying out the tests. In addition, manufacturers pay an annual licence fee for the use of the Prüfengel seal. We also receive a commission for linking to manufacturers’ websites. These remunerations have no influence on our test results or ratings.

We guarantee transparency and a fair evaluation. For a detailed insight into our comprehensive evaluation process, please click here.

FEIERDUN
–
Adjustable Dumbbells DS4

Manufacturer’s Product Description

According to the manufacturer, the DS4 multifunctional dumbbell set from FEIERDUN offers a versatile training solution. It can be used as dumbbells, a barbell, a kettlebell, and push-up handles. The weights are flexibly adjustable: the dumbbells can be configured from three to ten kilograms each, the barbell from three and a half to twenty kilograms, and the kettlebell from two to ten kilograms. The weight plates are labeled in both kilograms and pounds. Thanks to its compact design, the set is said to require less than 0.2 square meters of floor space.

The test confirmed the set’s versatile and functional nature. The numerous application possibilities were particularly impressive, as the set can be flexibly used for various exercises and types of training. Other positive aspects included the set’ s attractive appearance, good grip, the precise fit of the weight plates, and the reliable locking mechanisms. The 24-hour customer service and 30-day money-back guarantee offered by the seller also deserve praise.

A minor issue with the workmanship was discovered upon the initial delivery: one of the four locking mechanisms on the ring was broken. After reporting the issue, the affected mechanism was reshipped and showed no visible defects upon subsequent inspection. Since the remaining locks were also in perfect condition, the damage was limited to the lock from the first shipment. The extensive use of plastic in the packaging is also a point of concern from a sustainability perspective.

Overall , in practical testing , the dumbbell set demonstrated versatile uses, a compact design, and good handling. Limitations were evident in the damaged clasp from the first shipment as well as when changing the weight plates.

  • Versatile applications
  • Good grip
  • Space-saving design
  • 30-day money-back guarantee
  • A locking mechanism was damaged upon delivery
  • Use of plastic in packaging

First Impressions

Packaging and Contents

Here, we take a closer look at the packaging. Sustainability is becoming an increasingly important factor. In addition, of course, adequate protection of the product must be ensured. Is the contents of the package complete, and does the manufacturer make it as easy as possible for me to use the product right away?

Here, we take a closer look at the packaging. Sustainability is becoming an increasingly important factor. Of course, adequate protection of the product must also be ensured. Is the contents of the package complete, and does the manufacturer make it as easy as possible for me to use the product right away?

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Product protection

The box is sturdy; the product is adequately protected

100

Points

Sustainability of Packaging

Although the plastic wrap protects the product components, a more environmentally friendly alternative would still be desirable

80

Points

Package Contents & Scope

Complete

100

Points

Instructions for use

Available in multiple languages and clearly written

100

Points

OVERALL

95

Points

Weighting: 20%
*The maximum score is 100 points

The packaging made a solid and functional overall impression during the test. The dumbbell set was delivered in a sturdy cardboard box, which was additionally secured with plastic straps on the outside and wrapped in plastic film. Individual components were also separately wrapped in plastic film. Upon inspection, no visible damage to the components caused by shipping was found.

Unpacking went smoothly, as the individual components were clearly arranged and properly secured inside the box. Another positive aspect was the included multilingual user and assembly manual. It contains the essential information for assembling and using the dumbbell set.

A point of concern is the relatively high proportion of plastic in the packaging. From a sustainability perspective, packaging with a lower plastic content would be preferable.

First Time in Hand

Product Workmanship and Appearance

Before moving on to the practical test, we take a close look at the products’ build quality. How high-quality are the materials used? Are the feel and appearance satisfactory?

Before putting it through practical testing, we take a close look at the product’s build quality. How high-quality are the materials used? Are the feel and appearance satisfactory?

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Visual appearance

Attractive design

100

Points

Workmanship

Good overall build quality; one latch mechanism arrived damaged but was promptly reshipped

90

Points

Sturdiness

Very stable

100

Points

Product sustainability

No information provided, but there is a 30-day money-back guarantee

80

Points

OVERALL

93

Points

Weighting: 20%
*The maximum score is 100 points

At first glance, the modern and cohesive design of the dumbbell set stands out. The individual components are well-coordinated in color and appear sturdy. Upon closer inspection, the individual parts showed clean workmanship.

However, there was an issue with one of the four fasteners. In the initial shipment, the ring of one fastening mechanism was broken, causing parts of the fastener to come loose. The other three fasteners showed no issues and functioned as intended. Despite the defect, the dumbbell set could still be used.

After contacting customer service, a replacement clasp was sent without any hassle. It arrived complete and undamaged and worked flawlessly in testing. The defect in the first shipment thus remains a minor criticism regarding the workmanship, while the quick and hassle-free replacement shipment was a positive highlight.

Apart from this single flaw, the dumbbell set demonstrated clean workmanship, sturdy components, and a cohesive appearance.

Here’s what our hands-on test revealed

Does the manufacturer live up to its advertising claims?

Our hands-on test carries the highest weighting. Here, the product must undergo a wide variety of criteria and tests. We evaluate the features and product claims of the test item.

Our hands-on test carries the highest weighting and is therefore the most important factor. Here, the product must undergo a wide variety of criteria and tests. We evaluate the features and product claims of the test item.

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Grip of the barbell bars

Very good grip; feel comfortable and secure in the hand

100

Points

Ability to adjust weight (changing weight plates)

Easy to change; takes a little time to remove the lock

90

Points

How well the weight plates fit on the bar

Fit perfectly, no slipping whatsoever

100

Points

Security of the locks during various exercises

Sit securely and prevent the plates from moving

100

Points

Adaptability to different types of workouts

Highly versatile thanks to adjustable configurations

100

Points

OVERALL

98

Points

Weighting: 45%
*The maximum score is 100 points

In practical testing, the dumbbell set’s versatility was particularly evident. The dumbbell bars felt comfortable in the hand during various exercises and offered a good grip. The set was easy to handle during both classic strength exercises and a variety of movement patterns.

The training weight could be adjusted by adding or removing weight plates. Changing the weights was straightforward, though it took slightly longer compared to conventional dumbbell systems. For occasional adjustments during a workout, this did not pose a major limitation.

The weight plates fit precisely onto the bars and remained in place during the exercises. The locks held the weights securely in place, so no slipping of the weight plates was observed during the test.

The ability to combine the available components for different types of training is particularly practical. In the test, the set was used as dumbbells, a barbell, and a kettlebell. This allows a single set to cover a variety of exercises and muscle groups.

The practical test highlighted several strengths, particularly the good grip, the secure fit of the weight plates, and the versatile applications. A minor drawback is that changing weights takes a bit longer.

Test Plan

You can find a detailed overview of the evaluation criteria for the practical portion of the test, as well as the scoring breakdown, here. If you’re also interested in the evaluation of our other test criteria, please read our document on the evaluation process.

Value for the Money

Finally, we examine how the product stacks up against the competition. Can it compete with the competition in terms of price and quality? Would we generally recommend buying it?

Finally, we’ll examine how the product stacks up against the competition. Can it compete with the competition in terms of price and quality? Would we generally recommend buying it?

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Value for money

Very good performance in the mid-price range

80

Points

TOTAL

80

Points

Weighting: 15%
*The maximum score is 100 points

Prices for comparable multifunctional dumbbell sets on the internet range up to €179.99. Particularly affordable models are available starting at €21.80. Priced at €75.99, this dumbbell set falls into the mid-range price segment. The value for money is rated as very good overall. This rating takes into account both the good quality and versatile uses, as well as the mid-range price, resulting in a very good overall value.

Overall Result

1. Packaging & Contents

20%

95

Points

2. Product Workmanship & Appearance

20%

93

Points

3. In practical testing

45%

98

Points

4. Value for Money

15%

80

Points

TOTAL

94

Points

*The maximum score is 100 points

Adjustable Dumbbells DS4
 of the brand 
FEIERDUN
achieved
94
Points in our test and therefore passed. The test was carried out in the test period
09/26
and is stored in our database under the licence number
260816009
. Further information on our test procedure can be found at www.pruefengel.de/testverfahren.

The practical tests are based on careful observations and do not include long-term or laboratory tests. The test judgements reflect the personal impressions and opinions of the testers who try out the products in everyday use. We would like to emphasise that these evaluations do not claim to be exhaustive and may reflect both subjective and objective impressions. The evaluations are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a serious and thorough testing procedure, which has been developed in a long and professional process in close co-operation with our testers.

The practical tests are based on careful observations and do not include long-term or laboratory tests. The test judgements reflect the personal impressions and opinions of the testers who try out the products in everyday use. We would like to emphasise that these evaluations do not claim to be exhaustive and may reflect both subjective and objective impressions. The evaluations are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a serious and thorough testing procedure, which has been developed in a long and professional process in close co-operation with our testers.

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Evaluation process

You can find a detailed insight into our evaluation process, which forms the basis for our product ratings, here:

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