You are bidding for Zenith El Primero ChronoMaster Chronograph Open face, Ref.03.0240.4021, which is one of Zenith’s most iconic timepieces. At the heart of this chronograph is a legendary automatic high grade movement calibre 4021, with 39 jewels, which is runs great and all functions work as expected. This model features a beautiful gray dial, with minute registers, power reserve scale and constant seconds hand, open window with uniqe small seconds, so you can admire the mechanism, signed "Zenith El Primero","Automatic", "Swiss Made", "Reserve de marche" and famous “Zenith” logo, also original domed sapphire crystal. The watch is mounted on a 39mm stainless steel case excluding the crown and 46mm from lug to lug is in very good condition throughout, with minor surface scratches that are to be expected on any watch of this age. The back transparent lid,so you can admire the mechanism. The winding crown is completely original and correctly signed with the famous “Zenith” logo. The watch is presented on neutral black leather strap, with original steel clasp Zenith around 25cm including watch case. Brand : Zenith Model : El Primero ChronoMaster Chronograph Open Heart Reference : 03.0240.4021 Diameter : 39 mm excluding the crown Movement : Automatic calibre 4021, 39 jewels Functions: hours, minutes, small seconds, chronograph, power reserve. Case Material : Steel, very good condition Bracelet material : Neutral black leather strap, with original steel clasp Zenith around 25cm including watch case. Glass : Original Zenith Dial : Gray dial Crown: Original Zenith Water resistance : 30 m but we can´t guarantee Other specifications : Papers,Box. The legendary El Primero ChronoMaster is an impressive representation of the spirit of the Zenith brand's innovation. It is a perfect addition to you watch collection. You can also use these wonderful watches as a gift to your friends. The watch will be carefully packed and shipped highly insured Item will be shipped from our European logistics center in Vilnius, Lithuania as an priority registered parcel by DHL Express (2 - 3 working days). Any questions, please ask. Good luck and thank you for looking and for bidding.