SEIKO SRPH41K1 Thong Sia Exclusive Samurai Black Limited Edition

Launched on 16 December 2021, the SEIKO SRPH41K1 is a limited edition Prospex dive watch created for Thong Sia, the official distributor of Seiko in Singapore, Hong Kong, Macau, Malaysia and Brunei.

Fusing incredible craftsmanship and timeless aesthetics, the Seiko Prospex Thong Sia exclusive “Samurai Black” watch pays tribute to SEIKO’s homeland. Limited to 1,400 pieces, this timepiece features a hardened stainless-steel case measuring 45mm diameter. Mounted with a black ceramic unidirectional rotating bezel, it combines ruggedness, practicality and precision.

The movement beating inside the Seiko Samurai Black is the automatic 4R36 calibre. Displaying the day-date function at 3 o’clock, it has a power reserve of 41 hours.

The SEIKO Samurai Black timepiece (reference SRPH41K1) is exclusively available in Thong Sia distribution districts (Singapore, Hong Kong, Macau, Malaysia, and Brunei).

Technical details

Model: Seiko Prospex Thong Sia Exclusive “Samurai Black”
Reference SRPH41K1

Seiko 4R36 Automatic Calibre
Driving system: Automatic with manual winding mechanism
Power reserve: Approximately 41 hours
Vibrations: 21,600 vibrations per hour
Number of jewels: 24 jewels

Hour, minutes and seconds
Date and day

Hardened steel case
Case diameter: 45mm
Unidirectional rotating bezel
Ceramic Bezel insert
Dual-domed sapphire crystal glass
Screw-down crown
Screw case back
Water resistance: 200m


Limited edition of 1,400 pieces

Suggested Retail Price
S$838.90 (Singapore dollars)

Other features
Free Prospex camping light with each timepiece