This custom watch is a modded Moonswatch.  The movement has been replaced with a new Sunon movement and the plastic case has been upgraded with a metal case   Dial and strap is original.

Item #: 260054
Brand: Sevin Customs
Style: Casual/Sport/Diver
Functions: H/M/S/chrono
Movement: Sunon PE50 6 hand chronograph
Case: 42mm VK Case
Crystal: Sapphire
Dial: Omega/Swatch dial white
Bezel: fixed Tach bezel
Case back: Screw down eyes on the stars solid and new Gaskets
Crown: screw down with Gaskets
Power Reserve: Quartz
Strap: 20mm white Speedmaster strap

• Type: Battery-powered quartz
• Diameter & Thickness: 29.75mm outside diameter (12 3/4 Ligne) and 4.52mm thick
• Dial Layout: Sub-dials at 3 o’clock (24-hour), 6 o’clock (running seconds), and 9 o’clock (chrono minutes), with a date window typically at 4:30
• Accuracy: ± 45 seconds per month
• Battery: Uses watch cell 371 or SR626SW