More Details Luminox 46mm RECON NAV SPC 8830 Series Watch Details Luminox® "NAV SPC" (Navigation Specialist) watch from the RECON 8830 Series. 46mm carbon-compound case with screw-on case back. Dive timing unidirectional rotating bezel. Double-security gasket crown. Rubber, silicone, and polyurethane strap with buckle closure. Scratch-resistant sapphire crystal with anti-reflective coating. Swiss quartz movement with a GMT function for second time zone. Illuminated hands and hour markers. Second-color countdown zone on dial. Walking speed scale with km/h or mph. Three common map scales; inch/cm measurement; comparison chart. Removable compass. Date window. Water resistant up to 20 ATM. Made in Switzerland.