The Seiko Prospex SRPH15K1 Land Tortoise is an automatic men's watch known for its durable and stylish build inspired by the classic "Turtle" diver's watch. It features a green dial, a stainless steel case and bracelet, and a compass bezel. 
Movement

• Caliber: Japan-made automatic movement, Caliber 4R35.
• Winding: Automatic with manual winding capabilities.
• Jewels: 23 jewels.
• Power reserve: Approximately 41 hours when fully wound.
• Accuracy: Rated at +45 to -35 seconds per day.
• Functions:
  • Date display.
  • Stop second hand function (hacking).

Case and crystal

• Case material: Stainless steel.
• Case dimensions:
  • Diameter: 42.4mm.
  • Thickness: 11.7mm.
  • Length (lug-to-lug): 45.2mm.
• Bezel: Rotating stainless steel compass bezel with an inlaid green ring.
• Crown: Screw-down crown at the 4 o'clock position.
• Case back: Screw-down case back.
• Crystal: Scratch-resistant sapphire glass. 

Dial and luminous material 

• Dial color: Green with a sunray finish.
• Luminous material: LumiBrite on the hands and indexes for high visibility in the dark.
• Markers: Index hour markers. 

Bracelet

• Material: Stainless steel.
• Clasp: Three-fold clasp with a secure lock and push-button release.
• Lug width: 20mm. 

Other features

• Water resistance: 200 meters / 20 bar, suitable for diving.
• Weight: 150 grams.
• Style: Part of the Prospex Land series, with a design inspired by the popular "Turtle" dive watch.