The XS.0301 Leatherback Sea Turtle Giant is one of the best-selling watches from the American brand Luminox. With a diameter of 39 mm versus the 44 mm of the XS.0321, it shares all its technical specifications: carbon case, unidirectional bezel, Luminox LLT technology, anti-scratch treated mineral crystal, water-resistant to 100 metres...
Instruction manuals available at https://luminox.com/pages/manuals