NH70 Skeleton Automatic Movement What is the difference between

What is the difference between the NH70 and NH72

Royal Oak 37 mm Case (Silver) — silver case to match the silver bridge finish

you need a skeleton dial — a dial with cutouts or transparent sections that reveal the movement underneath

inspired by the original Royal Oak

and the green adds a subtle color accent that only reveals itself in direct light

NH70 Skeleton Automatic Movement What is the difference betweenThe Seiko NH70 is the entry level skeleton movement in the NH family. Manufactured by TMI (Time Module Inc.), a subsidiary of Seiko Instruments, the NH70 features open worked bridges in a natural silver finish that expose the movements inner mechanics through a skeleton dial. It shares the 21,600 bph frequency, 24 jewels, 41 hour power reserve, hacking, and hand winding of the solid NH35 family, but trades the date complication for the open worked