Compare Studio
16550 vs 1655
Differences are highlighted. Rows where both references share a value are dimmed.
| Specification | ||
|---|---|---|
| Nickname | — | Freccione |
| Production | 1985–1989 | 1971–1985 |
| Era | Sapphire transition | First Explorer II |
| Status | discontinued | discontinued |
| Case diameter | 40mm | 40mm |
| Lug width | 20mm | 20mm |
| Case material | Stainless steel | Stainless steel |
| Bezel | Fixed 24-hour, engraved steel | Fixed 24-hour, engraved steel |
| Bezel material | Stainless steel | Stainless steel |
| Crystal | Sapphire | Acrylic |
| Crown | Twinlock screw-down | Twinlock screw-down |
| Caseback type | Solid screw-down steel | Solid screw-down steel |
| Water resistance | 100m | 100m |
| Dial | White (Polar) or black | Black |
| Dial configuration | 3-6-9 with white-gold-surround markers; independent orange 24h hand | 3-6-9 with straight seconds; fixed (non-independent) orange 24h arrow hand |
| Dial text | — | Tritium ('SWISS' / 'T SWISS T <25' by period) |
| Hands | Mercedes + independent orange 24h | Mercedes + orange 24h arrow ('Freccione') |
| Lume | Tritium | Tritium |
| Lume type | Tritium | Tritium |
| Movement | Automatic | Automatic |
| Caliber | 3085 | 1575 |
| Manufacturer | Rolex | Rolex |
| Winding | automatic | automatic |
| Power reserve | ~48 hours | ~48 hours |
| Frequency | 28,800 vph | 28,800 vph |
| Jewels | 27 | 26 |
| Functions | Hours, minutes, seconds, date, independent 24h | Hours, minutes, seconds, date, fixed 24h indication |
| Bracelet | Oyster | Oyster |
| Bracelet material | Stainless steel | Stainless steel |
| Bracelet reference | 78360 | 78360 |
| End links | 580 | 580 (folded) |