Drawing inspiration from the legendary A-11 field watch worn by U.S. soldiers during World War II, the S5 Calendar Field merges that timeless military design with the practicality of a modern daily-wearer. It's built to endure harsh environments with a scratch-resistant sapphire crystal, locking screwdown crown, and waterproof resistance, making it ready for any adventure — whether it’s a daily commute or a weekend out in the wilderness.

• A water-resistant field watch designed for everyday use wherever you go
• Inspired by the legendary A-11 field watch worn by U.S. soldiers during World War II
• Includes interchangeable (1) Quick Release Black Silicone Strap and (1) Quick Release Khaki Nylon Strap
• 10ATM (100m/328 feet) water-resistance rating
• Glow in the dark C1 Superlume hand and dial
• Locking screwdown crown
• Date window

• Case: (Dia) 40mm
• Lug: (H) 48mm x (W) 20mm
• Crown: 3mm x 6mm
• Movement: Japan Made GR12
• Crystal/Lens: Flat dial sapphire
• -10/+20 sec/month timing tolerance
• Wrist size: (Cir) 6.4” - 8.5”