• ENTRANCE
  • HOME
  • ABOUT US
  • GTLS
    • Introduction of GTLS
    • Why choose GTLS
    • Specification of GTLS
      • Standard Color
      • Standard size
  • RADIATION SAFETY
    • Safety measurement
    • Safety concern
  • FAQ
  • Our service
    • Full OEM/ODM Project
    • GTLS watch assembling service
  • Standard Collection
    • Leisure watches
    • Diver/Military watches
    • Trend/ Fashion watches
  • Downloads
  • Contact us

ALL THE TIME GLOWING

GTLS (Gaseous Tritium Light Source) keeps glowing all the day! Unlike traditional light source in watches, they do not need any external energy to light them on.

LEGAL TRITIUM WATCH ASSEMBLER

Keytime Enterprises Limited is one of the few companies that are fully licensed by Hong Kong Government as a radiation source handler specialized in developing GTLS (Gaseous Tritium Light Sources) timepieces.

OUR HONG KONG WORKSHOP

All of the tritium watches are assembled in our Hong Kong workshop to meet the legal requirements from Hong Kong government.