RZE

Singapore-based microbrand founded by Yong Sin in 2019, focused on titanium tool watches with surface-hardening treatments. RZE's Resolute, Endeavour, Fortitude, and Valour collections use Grade 2 titanium with the brand's proprietary UltraHex coating (1,200 HV hardness, ~3× harder than untreated titanium), powered by Seiko NH35 movements.