Seiko Prospex S23631 Tuna 1975 Professional Saturation Diver Fireman Buckle: stainless steel signature buckle

Buckle: stainless steel signature buckle

Domed sapphire crystal with anti-reflection coating on both sides

Everything about this timepiece is pure Luminox

Band Type: Strap Leather

its red digit-dot numerals can be read at a glance during the day and with the push of a button at night

Seiko Prospex S23631 Tuna 1975 Professional Saturation Diver Fireman Buckle: stainless steel signature buckle1975 Saturation Diver's Watch Reinterpretation. Designed for those who treat life as the ultimate adventure, the Seiko Prospex line meets every challenge with technological excellence and style. Part of a rich legacy of innovation in high intensity timekeeping, Prospex continues to celebrate a long history of sports watch excellence with recreations and reinterpretations of landmark achievements. Honoring the first watch designed to withstand the