SRPE93 vs SPB317
An entry Prospex Turtle against a sapphire-crystal Prospex diver.
The differences that matter
- Size: the SRPE93 is 4 mm wider (45 vs 41 mm).
- Thickness: the SPB317 is slimmer (12.3 vs 13.4 mm).
- Crystal: the SPB317 has sapphire, which resists scratches far better than the SRPE93’s Hardlex.
- Movement: 4R36 in the SRPE93 (hacks and hand-winds), 6R35 in the SPB317 (hacks and hand-winds); power reserve 41 vs 70 hours.
- Price: Seiko US lists the SPB317 at $900 and the SRPE93 at $525.
Side by side
| SRPE93 | SPB317 | |
|---|---|---|
| Price | $525 | $900 |
| Size | 45 mm × 13.4 mm | 41 mm × 12.3 mm |
| Strap width | 22 mm | 20 mm |
| Comes on | Silicone strap | Silicone strap |
| Water resistance | 200 m | 200 m |
| Sapphire crystal | No | Yes |
| Lume | Hands and markers | Hands, markers and bezel |
| Screw-down crown | Yes | Yes |
| Movement | Automatic, hand-winding | Automatic, hand-winding |
| Bezel | Unidirectional rotating | Unidirectional rotating |
| Hacking seconds | Yes | Yes |
| Hand-winding | Yes | Yes |
| Power reserve | About 41 hours | About 70 hours |
Figures come from each watch’s sources, listed on its own page.