The Zenith El Primero reference 03.2150.4069/51.C805 was introduced in 2017 as a regular collection version of the 2016 limited edition of 25 pieces created in collaboration with the Hodinkee watch blog. It features a stainless steel case of 38mm, much like the original 1969 El Primero A386 , while it's dial is inspired by earlier (hand-wound) chronographs like the A271. This watch is powered by the El Primero caliber 4069.