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 material, long-term or laboratory tests. Our aim is to provide honest feedback to help you make a purchasing decision. For a detailed insight into our comprehensive evaluation process, which forms the basis of all our product reviews, please click here.

AARON
Lock One bicycle lock

The Lock One bicycle lock from AARON is a versatile and robust combination lock that has been specially developed to reliably secure bicycles, e-scooters, scooters and even motorbikes.
With a length of 100 cm , it offers a practical range to securely lock various items.
The 5-digit combination allows for an impressive 100,000 different code variants, ensuring a high level of security and effectively counteracting theft attempts.
Another positive feature is that the lock is made of hardened square steel and is additionally protected by a nylon fabric that also protects the vehicle from scratches. This hard-wearing coating withstands attacks with pliers and similar tools, giving the lock a particularly high level of security.
Another plus point is the environmentally friendly packaging, as the lock is supplied plastic-free in a compact cardboard box.
Thanks to the high-quality materials, a long service life can also be expected.

  • High security five-digit combination lock
  • Plastic-free shipping
  • Many code variants
  • Robust square steel and nylon sheathing
  • No size/colour options

The first impression

Packaging and contents

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

Product protection

Product sufficiently protected

100 %

Points

Sustainability Packaging

No unnecessary packaging waste, compact packaging, no use of plastic

100 %

Points

Package contents & scope

Product available according to description

100 %

Points

Instructions for use

Instruction manual included, clearly written, available in four other languages, clear images, an e-book is available via QR code

100 %

Points

Miscellaneous

Free e-book available via QR code

100 %

Points

TOTAL 100 points

Weighting: 20%
*Themaximum score is 100 points

The Lock One bike lock from AARON makes a solid impression as soon as you unpack it. The box itself is sturdy and offers the lock sufficient protection. The product arrived undamaged and well secured.
The bike lock is also delivered completely without plastic and in compact packaging, which avoids unnecessary packaging waste.
The contents of the packaging are complete and correspond to the product description.
To make handling easier, a multilingual instruction manual is included, which explains how to use the lock in detail and clearly. The instructions are available in a total of five languages, including German. It also contains clear pictures illustrating the individual steps for setting the desired combination.
The enclosed QR code, which provides access to a free e-book , offers particular added value. The digital manual contains valuable information and tips on all aspects of the bike, such as repair and care. This practical addition provides useful information beyond the product and supports the long-term use of bicycles.
The Lock One bicycle lock from AARON is therefore characterised not only by its high-quality workmanship, but also by an all-round well thought-out user experience.

The first time in your hand

Product processing and appearance

Before we start the practical test, we take a close look at the workmanship of the products. How high quality are the materials used? Are the look and feel satisfactory?

Visual appearance

Simple black design, flawless appearance

100 %

Points

Processing

Very good

100 %

Points

Stability

Robust

100 %

Points

Sustainability of the product

Three-year guarantee, durable materials (steel and nylon), therefore long service life to be expected

100 %

Points

TOTAL

100

Points

Weighting: 20%
*Themaximum score is 100 points

The Lock One bicycle lock from AARON impresses with its flawless appearance. The lock not only looks robust, but also has a high-quality finish, which gives the product an elegant and functional appearance. All surfaces and details are carefully finished and show no visible defects or traces of production faults.
In terms of workmanship, the lock scores highly thanks to the use of high-quality materials such as hardened steel and nylon, which make the product particularly resistant. The lock looks sturdy and well-made, so that the product should be reliably protected from external influences in daily use.
The product is also made from robust materials and comes with a three-year guarantee , which emphasises its long-term usability and offers additional security. The combination of steel and nylon ensures that the lock can be expected to remain in good condition even with regular use and will not lose its protective function. You can also expect the security to be maintained for years to come, making the lock a valuable investment.
Overall, the Lock One bike lock from AARON makes an excellent impression both visually and in terms of handling. It combines high-quality materials and careful workmanship with an elegant design that optimally combines functionality and style.

This is what our practical test showed

Does the manufacturer keep its advertising promises?

Our practical test has the highest relevance and therefore weighting. Here, the product has to undergo a wide range of criteria and tests. We check the functions and product promises of the test article.

Mechanical strength

Slight scratches or dents, but functional.
The lock shows minor external signs of wear such as light scratches or small dents, but these do not affect the function of the lock in any way

90 %

Points

Weather resistance

No corrosion or malfunctions after the tests. After the lock has undergone all test steps, it shows no signs of corrosion and functions perfectly during use. Neither the water bath, freezing nor exposure to sunlight have affected the lock’s functionality

100 %

Points

Operating the numerical code

Number combination very easy to operate, mechanism flawless under all conditions. If the number mechanism worked perfectly without any difficulties, delays or additional effort in all test conditions (reset, poor lighting conditions, gloves, different combinations)

100 %

Points

Ergonomic handling

Very easy to operate, numbers and mechanism flawless. Full marks are awarded if the mechanism is extremely smooth-running, the dials can be turned without any effort or delay, and operation is possible without any problems even in very poor lighting conditions

100 %

Points

Compatibility with various bikes and mounting options

The lock fits almost all tested bikes and mounting options. There were minimal impairments or minor adjustments were required (due to the length), but these did not affect security or functionality

90 %

Points

TOTAL

96

Points

Weighting: 45%
*Themaximum score is 100 points

The mechanical strength of the Lock One bicycle lock from AARON was tested under realistic conditions. The lock then showed slight scratches and slight damage to the nylon. However, these signs of wear did not affect the functionality of the lock in any way, which speaks in favour of good material processing and solid quality.
Another aspect is the weather resistance of the lock. In various test scenarios simulating intensive weather influences such as water baths, frost and direct sunlight, the lock showed no signs of corrosion or malfunctions. These results confirm the robust construction and high resistance of the materials used, which guarantee long-term use even under demanding weather conditions.
The function of the numerical code was also flawless. The five-digit mechanism could be operated smoothly and without additional effort, even under difficult conditions such as poor lighting conditions or when wearing gloves.
The lock also impresses with its ergonomic handling. The mechanism is smooth-running and the dials can be turned effortlessly. Even after repeatedly adjusting the code, no signs of wear were detected.
The compatibility with different types of bike and mounting options was also impressive. The lock proved to be usable and versatile in most of the mounting options tested. In some cases, it was not possible to connect the bike to another fixed object. However, this did not affect the security or function of the lock.
To summarise, the Lock One bicycle lock from AARON impressed in terms of security, ease of use and weather resistance. The test results confirm the high quality of workmanship of this lock, which proves to be a reliable companion in everyday life as it combines both security and ease of use.

Test plan

You can find a detailed insight into the evaluation criteria of the practical part of the test and the distribution of points here. If you are also interested in the evaluation of our other test criteria, please read our document on the evaluation process.

Price/performance ratio

and ratings from consumers

Finally, we analyse how the product compares to the competition. Can it keep up with the competition in terms of price and quality? Would we generally recommend buying it? We also look at the consumer reviews and check whether the critical and positive reviews are actually justified.

Price / performance ratio

Very good performance in the lower price segment

100 %

Points

Rating cut

4.5 stars on Amazon

75 %

Points

TOTAL

88

Points

Weighting: 15%
*Themaximum score is 100 points

On the Amazon platform, consumers rate the Lock One bike lock from AARON with an average of 4.5 out of 5 stars.
The actual tamper resistance of the lock is criticised. Some report that the lock can be opened with simple techniques and little effort, which casts doubt on the level of security.
However, the five-digit numerical code is emphasised as a positive feature, which offers a sufficiently high level of security for many and is easy to set. Many also appreciate the robust design made of high-quality steel, which enables bicycles to be reliably secured, as well as the clearly visible, easily rotatable numbers, which are also practical in the dark. The flexibility of the chain and the compact design for transport are also praised.
Our practical test did not carry out sufficient testing with regard to the criticised safety to be able to evaluate this. However, the user-friendliness of the numerical code and the solid construction of the lock were confirmed.


Prices of up to around € 70.00 are charged on the Internet for equivalent products. Very affordable products are available from around €8.00 . The Lock One bike lock from AARON is therefore currently in the lower price segment with a price of €24.99. For the quality and performance received, the price-performance ratio is very good.

Overall result

1. packaging & contents

20%

100 %

Points

2. product processing & appearance

20%

100 %

Points

3. in the practical test

45%

96 %

Points

4. price/performance & consumer reviews

15%

88 %

Points

TOTAL

96

Points

*Themaximum score is 100 points

Lock One bicycle lock
 of the brand 
AARON
achieved
96
Points in our test and therefore passed. The test was carried out in the test period
11/24
and is stored in our database under the licence number
241023004
. 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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