Buying a watch winder and storage separately is the norm, but there are devices that combine both. The Safewinder SmoothX 4 is one of them: a lockable box that winds four watches and at the same time keeps them behind a locked door. In this data check we put into context what the device does technically, where its limits lie and for whom it is worth buying. One thing is clear from the start and runs through the whole text: the SmoothX 4 is not a certified safe, and you should understand that before buying.
Data check: Safewinder SmoothX 4 at a glance
The Safewinder SmoothX 4 belongs to a small class of its own, sitting between a classic multi-winder and a watch safe: the lockable winder box. It combines four full watch winders, a lockable door and a digital lock in a single compact housing. This appeals to beginners who do not want to split the winding of their automatic watches and solid privacy across two separate devices. This bundling is its selling point, and it works surprisingly well in everyday use.
Technically, the SmoothX 4 is on the level of good multi-winders. Each of the four positions can be set individually for speed and rotation direction, operated via a touch panel with LCD display. The following overview gathers the verifiable key data as shown in manufacturer and seller information as of July 2026, so you can see at a glance what is inside.
| Feature | Safewinder SmoothX 4 |
|---|---|
| Winder positions | 4, individually programmable |
| Turns per day | 650 to 1,950 TPD in 5 levels |
| Rotation directions | 3 (left, right, both directions) |
| Sleep mode | 12 hours running / 12 hours pause |
| Closure | Digital lock with emergency key, 2 locking bolts |
| Operation | Touch control panel with LCD |
| Lighting | LED interior lighting when the door opens |
| Dimensions (approx.) | 43 x 23 x 20 cm |
| Look | Carbon look with mirrored front |
| Security class | no EN 1143-1 certification |
| Editorial rating | 4,0/5 |
Safewinder SmoothX 4 Carbon
- Four individually programmable winders with touch panel and LCD, five speed levels from 650 to 1,950 turns
- Door with two locking bolts, concealed hinges and digital lock with emergency key
- LED interior lighting when the door opens, carbon look with mirrored front, compact width of around 43 centimetres
- No EN 1143-1 certification: for insurance purposes a lockable piece of furniture, not a security safe
Security honestly put into context: not an EN 1143-1 safe
The most important sentence about this device is also the most uncomfortable, which is why we deliberately put it first: the Safewinder SmoothX 4 is not a security safe certified to EN 1143-1. The EN 1143-1 standard describes the tested burglary resistance of genuine safes and is the basis on which insurers cover higher sums at all. A device without this testing remains a piece of furniture for insurance purposes, regardless of how much technology and how many bolts it brings.
This is no criticism of the concept, but an assessment that must be settled before buying. The SmoothX 4 reliably protects against dust, prying eyes and spontaneous access, for example by visitors, cleaners or opportunists. It is not designed to withstand professional forcing tools or a planned burglary, as it lacks the tested armouring and anchoring of a genuine security safe.
What this means for you in practice depends solely on the value of your collection. The system of resistance grades and the rough insurance guide values per grade are explained in our basics article on safe security levels. If your watches reach relevant sums there, the collection belongs in a grade-tested safe from the watch safe buying guide, while the SmoothX 4 takes on the pleasant role of winding and privacy solution. The two do not exclude each other, they simply serve different purposes.
Strengths and weaknesses in detail
The greatest strength of the SmoothX 4 is its integration. Four individually programmable winders, a sleep mode with twelve hours running and twelve hours pause, and a lockable door sit in a housing that, at around 43 centimetres wide, fits on many shelves and in many cabinets. The LED interior lighting only switches on when opened and briefly showcases the watches, without exposing the movements to permanent light and heat.
The controls are also convincing for the price class. Via the touch display you choose, for each position, one of the five speed levels between 650 and 1,950 turns per day and one of the three rotation directions. This way a dress watch that winds sparingly and a hungry diver's chronograph run side by side without problems, each with the values you look up for your calibre in our TPD table.
The weaknesses lie where the concept reaches its natural limits. Four positions quickly become too few for a growing collection, and anyone who wants to rotate more watches at once is better off going straight to the identically built Safewinder SmoothX 8 with eight positions. The missing certification is the second point that should not be glossed over: for high values, the box is and remains no substitute for a safe.
Operation and placement in everyday use
In everyday use, the SmoothX 4 is straightforward. Via the touch panel with LCD you set the speed level, rotation direction and sleep mode separately for each of the four positions, so every watch is moved exactly as its movement requires. Once set, the box works largely on its own and needs hardly any attention. This individual programming is the real gain in convenience over simple synchronous winders, where all positions have to run the same programme.
It is worth giving the placement a little thought in advance. A solid, low-vibration spot is gentler on the motors, and a little distance from the back wall makes it easier to open the door with its concealed hinges. If you put the box in the bedroom, you benefit from the twelve-hour sleep mode, but you should judge the running noise of the motors in your own room beforehand, because manufacturer specifications are no substitute for a personal impression of the sound. The compact width of around 43 centimetres usually makes finding space on a shelf or in a cupboard easy.
Who is the Safewinder SmoothX 4 suitable for
The SmoothX 4 is the right device for beginners and for owners of small to medium-sized automatic collections. If you want two to four watches wound reliably and at the same time kept out of direct sight, you get both here in one tidy housing. The box makes particular sense if you are not planning a certified safe anyway and it is mainly about order, dust protection and discretion for you.
The device is less ideal for two other groups. Collectors with high insured values are better served by the clean separation of a grade-tested safe and a separate winder, as described in detail in the Safe with watch winder category. And anyone who already foresees moving more than four watches should factor in the extra cost of the eight-watch model, or plan from the outset for an additional multi-watch winder for two to four watches.
Editorial verdict
The Safewinder SmoothX 4 is an honest solution with a clear profile: full-fledged winder technology for four watches, packaged behind a lockable door with a digital lock and LED interior. As a winding and privacy device for beginners, it gets the essentials right, from individual programming and the three rotation directions to the practical sleep mode. You just need to know what you are getting when you buy, namely a comfortable winder box and expressly not a security safe. With that expectation, people are rarely disappointed, and that is why our editorial team gives it 4.0 out of 5 points.
The text of this page was created with an AI language model and was reviewed and approved editorially before publication. Editorial responsibility lies with Seydhan Cakmak. The product images shown are not AI images but manufacturer and retailer photos from the Amazon catalogue, which we embed unchanged.
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