Put your heart into it with this chronograph watch. This strapless unit displays accurate real-time reading of your heart rate at your wrist so you can stay in your zone. Brand: Soleus Dial Color: Gray Strap: Black silicone Clasp: Buckle Movement: Quartz Water Resistance: 30m Case Width: 46.2mm Case Thickness: 16.4mm Bracelet Dimensions: 228.6mm long, 22.1mm wide Model No.: SH010010 Special Features: Stop watch; alarm; perpetual calendar; 1/100-second chronograph function; rechargeable battery Jewelry photos are enlarged to show detail.