In the air or on land, look stylish when you wear this men's citizen eco-driveâ® promaster air chronograph watch with a blue dial. The blue dial features luminous silver-toned hands and markers, a trio of chronograph sub-dials and a date display at 4 o'clock. 46. 0mm stainless steel case with sapphire crystal and a blue ion-plated rotating bezel with calculator and tachymeter functions include atomic time clock synchronization, 1-second chronograph that measures up to 60 minutes and a perpetual calendar japanese quartz movement keeps accurate time while citizen eco-driveâ® technology is sustainably powered by light. The black polyurethane strap secures with a buckle clasp. Water resistant to 200 meters, this watch includes a 5-year limited manufacturer warranty, with an additional 1-year warranty when you register your watch with citizen. We are an authorized citizen dealer.