The Citizen Eco-Drive Calibre 8700 offers effortless style, with a brown leather strap and rose gold-plated 42mm case. Featuring a 1/5 second chronograph which measures up to 60 minutes, perpetual calendar, alarm and anti-reflective sapphire crystal. This timepiece features Citizen Eco-Drive technology – powered by light any light, it never needs a battery. Ref: BL8156-12E Product Information Brand: Citizen Eco-Drive E870 Case Material: Rose Gold Plated Stainless Steel Case Size: 42mm Type of Strap: Brown Leather Strap Glass Material: Sapphire Crystal Dial: Black Water Resistant: 100m Gender: Mens