Spec of the JW-01
Diameter: 43mm
Thickness: 13mm
173 pieces of subassembly module and 21 jewels
Frequency: 28,800 Oscillation/Hour
80 hours power reserve 
Movement Size: Ø30.00mm 
Movement thickness: 5.23mm 
Accuracy: +/-20 seconds/day
Sweep-second hand 
Black Italian Calf Leather strap
(If you want a different color strap, please "add a note" in the "cart" section)
Both sides sapphire crystal