Polished and satin-finished titanium case, blue sunray dial with rhodium-plated hands and index markers including minute track on outer rim, fixed titanium bezel also polished and satin-finished, two composite resin bezel lugs between case and bezel - one black, one blue stitched leather/rubber blended strap assembly. Analog time display, date at 6 o'clock, chronograph with 30-minute and 60-second sub-dials. Hublot calibre HUB1143 automatic movement (based on ETA 2892-A2) featuring approx. 59 jewels, 28800 vph frequency, ~42 hours power reserve. Sapphire crystal glass is scratch resistant. Deployment clasp closure and a transparent case back allow visibility of the movement. Water resistant to 50 meters / 165 feet (depth). Item variations include: 521 NX 7170 LR, 521-NX-7170-LR, 521/NX/7170/LR.