https://cronos.watch/products/new-arrivals-cronos-39mm-gs-gmt-nh34-mechanical-men-watch-l6029 Watch Specification: Brand: Cronos Movement: NH34 automatic movement Model number: L6029 Case material: 316L stainless steel Case back: 316L stainless steel(shark engraved) Bezel Insert: ceramic Watch mirror: Sapphire glass with AR-Coating Water resistance: 100 m /10 ATM Luminous: BGW9 Super Luminous (Blue)&C1 Light Crown: Screw-Down Case: Screw-Down Case Watch Dimension: Case diameter: 39mm (without crown) Case length: 47mm( lug to lug) Case thickness: 12.30mm Band width: 20mm