Longines Master Collection L2.919.4.51.6 42 mm Black Dial Moonphase Date Watch

Master Collection Moonphase Watch

The Longines Master Collection L2.919.4.51.6 is a 42 mm stainless steel timepiece with a black barleycorn dial and moonphase complication. It runs on the Swiss automatic caliber L899.5 beating at 25,200 vibrations per hour with a 72 hour power reserve. The watch is water resistant to 30 meters and secured by a triple safety folding clasp.

Verify Wrist Size and Water Needs

The integrated bracelet measures 21 mm at the lugs and uses a push piece opening mechanism that requires proper adjustment for a secure fit. Water resistance is rated at 30 meters which suits splashes and brief immersion but not swimming or diving. The 11.20 mm case thickness sits close to the wrist under a cuff.

Exhibition Caseback and Daily Wear

A transparent sapphire caseback reveals the decorated automatic movement while the front crystal is scratch resistant sapphire. The signed pull push crown operates both the pointer date at 6 o'clock and the moonphase display. The stainless steel bracelet and fixed bezel create a cohesive metal profile suited to formal and business settings.