HFL001P1 Rotocall Digital

A new creation celebrates Seiko’s 145th anniversary in Edo purple, 
reflecting an evolving aesthetic shaped by Tokyo’s heritage

In the third series of commemorative limited-edition watches celebrating Seiko’s 145th anniversary, “Edo purple” serves as a central design element. This color reflects traditions passed on from ancient Edo to modern-day Tokyo and the spirit of creativity that has kept Japan’s largest city evolving into the present day.

This digital quartz creation harmoniously blends refinement with a bold presence on the wrist. The watch combines a black case and bracelet with a purple aluminum bezel, expressing a distinctive sense of understated elegance and strength synonymous with Edo, the ancient name of Tokyo. Gold-tone accents elevate the design through their subtle brilliance.

The watch is based on a classic 1982 digital watch design, the Rotocall, which featured a rotary switch that revolutionized how users changed modes with a simple turn of the bezel. This unique design, combined with its popularity among astronauts, contributed to the model’s strong international recognition.

Movement

Caliber Number : A824
Movement Type : Quartz
Precision : ±20 seconds per month
Battery life : Approx. 3 years
Functions : 

• Rotary switch
• Counter Function
• Chronograph up to 100 hours in 1/100 second increments
• Alarm function (single-time alarm)
• Timer function (up to 100 minutes in 1-minute increments)
• Full Auto Calendar Function (until December 31, 2074)
• Dual-time function
• Battery life warning function
• Internal Illumination (LED)

Case/Band

Case Material : Stainless steel (hard coating)
Case Size 
Thickness : 10.6mm
Diameter : 37.0mm
Lug-to-lug : 43.5mm
Crystal : Hardlex
Clasp : Three-fold clasp with push button release
Distance between lugs : 20mm

Other Details

Water Resistance : 10 bar
Weight : 108.0g
Features : 

• LIMITED EDITION on the case back
• Rotating bezel
• Screw case back