The steel belt official synchronization also has a higher quality V9 new product Jaeger-LeCoultre Master Calendar Series 6. The watch movement adopts the modified all-in-one 899 model movement, the movement is 28800 beats and stable, 39mmX9.8mm, exquisite ultra-thin appearance, The sapphire mirror glass looks particularly delicate, and the watch strap can be optional with steel strap or leather strap! ,