Case Platforms: Pick Before You Buy Parts
Author: Funny Items
Release time: 2026-08-25 18:36:46
View number: 11
Pick Your Platform
Cases are not all interchangeable — each platform has its own dial, crystal, bezel and crown specs. Here is how the main ones differ.
Platform Comparison
| Platform | Size | Dial | Character |
|---|---|---|---|
| SKX007-style | 40mm | 28.5mm | The universal standard |
| 39mm Sub-style | 39mm | 28.5mm | Slimmer, dressier |
| Turtle/SRP-style | 44mm cushion | 28.5–29.5mm varies | Chunky, vintage cushion |
| 43.5mm flagship | 43.5mm | 30mm | Maximum presence |
| 31mm small | 31mm | 26.3mm | Petite wrists |
Why Platform Matters
- Dial diameter differs across platforms
- Crystal shapes and gaskets are case-specific
- Bezel inserts vary in outer/inner diameter
- Crown threads usually standard, but verify
See our dial sizes guide and insert sizing guide.
Frequently Asked Questions
Can I mix parts across platforms?
Movement and hands often transfer; dials, crystals and inserts usually don't. Check every spec.
Best first platform?
40mm SKX007-style or our 39mm line — biggest parts availability. Browse cases.