The oversized 51-30 Chrono gets a mind-bending refresh in the 4th Dimension series. The three subdials have been altered to track the esoteric, and horizontal lines across the dial give the whole thing unimaginable depth. A fisheye effect is applied to it all to make this a 300 meter / 30 ATM timepiece that truly pops. Watch Size: 51mm Watch Case Material: Stainless Steel Watch Case Thickness: 15mm Watch Crystal Material: Hardened Mineral Watch Movement Type: Quartz Water Rating: 300 Meter / 30 ATM Lug Measurement: 25mm Band Material: Stainless Steel Band Connection: Screw Bar Band Type: Free Swing