Casio
Casio Pro Trek 38 mm Blue 18k
Photography on request
Front view
Dial, hands and bezel as delivered.
Case-back view
Case-back engraving and, where fitted, the sapphire display.
Movement
Calibre with its finishing and decoration.
On the wrist
Worn shot for proportion and strap drape.
Casio · Pro Trek
Casio Pro Trek 38 mm Blue 18k
Reference 68210OR.48
Reference at a glance
- Brand
- Casio
- Collection
- Pro Trek
- Model
- Casio Pro Trek 38 mm Blue 18k
- Reference number
- 68210OR.48
- Year / era
- 1971 · 1970s — quartz-crisis era
- Complication
- Annual calendar
- Movement
- Eco-Drive solar quartz
- Case material
- 18k yellow gold
- Dial type
- Blue "Grande Tapisserie"
- Strap / bracelet
- NATO textile strap
- Water resistance
- 50 m
- Limited-edition status
- Regular production, not a limited edition
Case, dial & bracelet
- Case dimensions
- 38 mm
- Case thickness
- 14.1 mm
- Case material
- 18k yellow gold
- Bezel
- Bidirectional 24-hour Cerachrom
- Crystal
- Flat sapphire with Cyclops lens
- Dial
- Blue "Grande Tapisserie"
- Hands
- Rhodium-plated baton hands with luminous fill
- Indexes
- Applied faceted white-gold indexes
- Bracelet / strap
- NATO textile strap
- Clasp / buckle
- Titanium deployant clasp
- Water resistance
- 50 m
Movement
- Movement / calibre
- Calibre 9F — Eco-Drive solar quartz
- Movement type
- Manual-winding
- Frequency
- 36,000 vph (5 Hz)
- Power reserve
- 38 hours
- Number of jewels
- 25 jewels
- Complications
- Annual calendar
- Functions
- Dive time, running seconds
- Watchmaker
- Assembled and regulated by a single watchmaker, who signs off the piece before casing.
Production & market
- Production period
- 1971 – 1987
- Limited-edition quantity
- Not applicable
- Current market information
- Trades close to retail on the secondary market, with steady demand for full-set examples.
Designer
Jörg Hysek
Jörg Hysek left Rolex and Seiko's European studios to build a design practice in Geneva, giving houses such as Vacheron Constantin, Breguet, Seiko and TAG Heuer their sculptural, architecture-led cases before founding his own brand, HD3.
Historical significance
Casio Pro Trek 38 mm Blue 18k sits within Casio's Pro Trek line, introduced in 1971. It carries the house codes established since 1946 — 18k yellow gold case, blue "grande tapisserie" dial and eco-drive solar quartz — and is one of the references collectors use to date the evolution of the collection.
Interesting facts
- The bracelet tapers across its length, which is why the profile looks thinner on the wrist than the specification suggests.
- The reference was originally planned as a one-year run and stayed in the catalogue for well over a decade.
- The case is finished by hand, alternating polished and satin-brushed surfaces in a single pass so the edges stay razor sharp.
The House
Casio
Brand facts
- Founding year
- 1946
- Founder
- Tadao Kashio
- Headquarters
- Japan
- Tier
- Japanese
- Major collections
- G-Shock, Edifice, Oceanus, Pro Trek, Vintage
- Signature technologies
- In-house hairspring production · Shock-absorbing movement mounting
- Famous movements
- Spring Drive · Eco-Drive solar quartz · Automatic, 24 jewels · High-accuracy quartz
- Notable watches
- Casio G-Shock 39 mm Blue 18k (1998) · Casio G-Shock 42 mm Black Ceramic (2002) · Casio G-Shock 43 mm Salmon 18k (1985) · Casio G-Shock 42 mm Silvered Sapphire (2004)
Brand history
Casio has spent more than 80 years refining a single idea: a watch should outlive its owner. From the earliest workshop pieces to today's G-Shock, the house has balanced technical ambition with a recognisable design language, and its collections remain among the most closely followed by collectors worldwide.
Tadao Kashio established Casio in 1946, working from Japan at a time when precision was measured by hand. The founder's obsession with finishing and accuracy still defines every Casio calibre produced today.
Historical milestones
1946
Tadao Kashio founds Casio in Japan.
1969
The quartz era forces Casio to redefine mechanical watchmaking.
1990
Casio enters the modern collector market with its signature lines.
2024
Casio continues to produce G-Shock, Edifice, Oceanus and other icons in limited numbers.