Support receiver
Adjustable watch holder No.5674
MEKOTRIN · Rotating case-back tool

A bench frame with an adjustable holder, grooved rings and interchangeable opening jaws.
Match the exact groove or contact geometry; a named watch family is not proof of fit for an individual case.
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The physical equipment
Adjustable watch holder No.5674
Removable/adjustable pawl holder No.5675
Steel-aluminum
What this choice changes
The MEKOTRIN 5700 brings a supporting holder and case-back engagement parts into one bench arrangement. It is the more involved choice to compare with a handheld three-point wrench when the setup itself matters: the case support and opening receiver are separate elements of the system, rather than a single tool held over the back.
The assortment contains different groups of components. The seller lists six grooved rings or chucks, twelve fixing molds, twelve opening jaws and four screws, alongside the No. 5674 holder, No. 5675 jaw holder, conversion adapter and two lug-support blocks. These parts have different jobs. Choose the system by the engagement you need and the actual case support, not by adding their counts into one advertised number of opening sizes.
The largest stated chuck opening is 65 mm, the grooved-ring labels run from 18.5 to 29.5 mm, and the lug-block label is 6–22 mm. Those measurements describe different interfaces and cannot substitute for one another. Likewise, the 5700 designation does not establish that another maker’s dies or a particular branded watch will fit. Confirm the exact back profile and each receiving interface before buying replacement parts.
The illustrated frame is 30 cm high with a 25 × 11 cm base plan. Those outside dimensions help you plan bench space, but do not describe pressing stroke or working clearance. If you only need to support a case for an opener you already own, the separate Dofover or Joyzan holders are simpler offerings to compare.
| Detail | Listed specification |
|---|---|
| Frame/system label | 5700 |
| Support receiver | Adjustable watch holder No.5674 |
| Opening receiver | Removable/adjustable pawl holder No.5675 |
| Grooved ring labels | 18.5, 20.2, 22.5, 26.5, 28.3 and 29.5 mm |
| Maximum chuck opening | 65 mm |
| Lug-block label range | 6–22 mm |
| Construction | Steel-aluminum |
| Illustrated overall frame/base dimensions | 30 cm height; 25 × 11 cm base plan; 2 cm base height |
Match the exact groove or contact geometry; a named watch family is not proof of fit for an individual case.
Check support, jaw holder and adapter interfaces individually before assuming compatibility with another maker’s 5700 parts.
Use the 30 cm frame height and 25 × 11 cm base plan for space planning, not as usable working clearance.
Check the part that will actually engage or support it. The seller states a maximum chuck opening of 65 mm; the six grooved rings are labeled 18.5, 20.2, 22.5, 26.5, 28.3 and 29.5 mm, and the lug blocks are labeled 6–22 mm. Match the back profile, ring engagement and lug support separately rather than choosing by the largest number.
Compare a standalone case holder first if support is the only missing part of your setup. This system also supplies a frame, opening receiver and multiple engagement components.
The system designation alone does not establish interchangeability. Check the actual receiver and die dimensions before choosing cross-brand replacements.
Selected listing descriptions, specifications and source images were compared for this reference. No hands-on trial is claimed. Product identifier: B0GXPZ8KN4.