Citizen Promaster Carbon Watch BJ2105-51E Eco-drive technology fuses with a carbon fibre bezel to create a Promaster Carbon, a collection of exceptionally sporty timepieces. Depth Display to 50m Maximum Depth Memory One-Way Rotating Elapsed-Time Carbon Fibre Bezel 50 Minute Chronograph 12/24 Hour Time Screw-Back Case & Screw-Down Crown Non-Reflective Crystal Glass Expansion Cap Power Reserve Indicator ISO Certified Water Resistant to 200m