This Seiko SRPH87K1 is a centerpiece of the Seiko Essentials collection, offering the perfect balance of traditional watchmaking and modern, everyday style. Featuring a deep, vibrant blue sunray dial, this mechanical timepiece is designed for those who value the "heartbeat" of an automatic movement over a standard quartz watch. With its sleek stainless steel construction and refined silhouette, it is a versatile "GADA" (Go Anywhere, Do Anything) watch that transitions seamlessly from a casual weekend to a formal boardroom.

The "Deep Sea Executive" (Ref. SRPH87K1)

Features:
- Electric Sunray Blue Dial: A stunning blue face that captures and plays with light, shifting from a bright royal blue to a deep midnight navy.
- 4R35 Automatic Caliber: A high-quality, self-winding mechanical movement that runs on the natural motion of your wrist. It features a 41-hour power reserve and manual winding capability.
- See-Through Exhibition Back: The screw-down case back features a clear window, allowing you to admire the 23-jewel Japanese movement and its oscillating rotor in action.
- Exceptional Legibility: Sharp, polished silver-tone indices and hands are coated in Seiko's legendary Lumibrite, ensuring the time is visible even in total darkness.
- Robust Water Resistance: Rated for 100 meters (10 Bar), meaning this dress watch is tough enough for swimming and snorkeling without breaking a sweat.

Specifications:
- Movement: x Caliber: 4R35 Automatic (Mechanical)
- Functions: Date, Hacking (stop-seconds) for precise setting
- Power Reserve: 41 Hours
- Case & Dial:
- Diameter: 41.2 mm
- Thickness: 11.8 mm
- Material: 316L Stainless Steel (Brushed & Polished)
- Glass: Hardlex Crystal
- Dial Color: Sunray Blue

Bracelet:
- Material: Stainless Steel link bracelet
- Clasp: Three-fold clasp with secure push-button release
- Additional Details:
- Water Resistance: 10 Bar (100 Meters / 330 Feet)
- Case Back: Exhibition Screw-down back