Promaster SST Collection. Brushed stainless steel case and bracelet. Black dial with silver tone hands and hour markers. Luminous hands and markers. Digital display with Red LED Back Light. Rotating Slide Rule Bezel. Digital chronograph 1/1000 second. Split Lap Time. Average Speed Calculation Alarm. Digital calendar with day, date and month. World Time in 43 Cities. 99 minute Countdown timer. Precise Eco-Drive movement. Powered completely by light with 240-Day Power Reserve. Rotating slide-rule bezel. Scratch resistant non-reflective mineral crystal. Fold-over Push-button deployment clasp. Water resistant to 200m. Case measures 50mm diameter by 14mm thick.