The Serket Reef X Emerald green is a 200m automatic dive watch in a 43mm brushed-and-polished 316L stainless steel case with a 120-click unidirectional ceramic bezel and a green-lumed pip at 12. The emerald green dial carries a scorpion applique at 12 and Super-LumiNova BGW9 lume, driven by a Seiko NH35 automatic with date at 3 under an anti-reflective sapphire crystal. A screw-down crown with guard keeps it dive-ready, and every Reef X ships with both a steel oyster bracelet and a color-matched silicone strap.