Seiko SRPE31K1 Prospex Tuna Street Series Automatic Watch

Seiko SRPE31K1 Prospex Street Series “Urban Safari” Baby Tuna Automatic Watch – Men’s Dive Watch, Grey Dial & Bezel

The Seiko Prospex SRPE31K1 (“Urban Safari” Baby Tuna) delivers tough dive-ready performance in a compact, streetwear‑friendly format. Drawing from Seiko’s legendary Tuna silhouette but dressed in matte grey with a black PVD‑coated shroud, it blends bold style with real-world utility—engineered for both urban exploration and recreational diving.

Recommended For Men – ideal for divers seeking tool‑grade robustness, urban adventurers, or anyone wanting a distinctive, everyday rugged watch

Specifications:
• Movement: Automatic 4R36 with manual winding, hacking
• Power Reserve: ~41 hours
• Case Diameter: 43.2 mm (≈44 mm lug‑to‑lug)
• Case Thickness: 12.7 mm
• Case Material: Stainless Steel with dark-grey hard coating
• Strap: Grey textured silicone (accordion style)
• Dial: Matte grey with applied luminous markers and day/date at 3 o’clock
• Bezel: Unidirectional rotating black & grey Hardlex insert with luminous scale
• Water Resistance: 200 m (ISO 6425 certified diver’s watch)
• Crystal: Hardlex mineral glass
• Lume: LumiBrite on hands, indexes, and bezel
• Crown: Screw‑down at 4 o’clock
• Clasp: Buckle clasp
• Movement Jewels: 24; use features stop-second hand
• Accuracy: +45/-35 sec/day
• Weight: ~107 g with strap