The Glashütte Original Senator Chronograph Panorama Date introduced in 2014 with either a platinum or red gold case, housing the then new caliber 37-01 chronograph movement. At BaselWorld 2017, the brand added a stainless steel version with black dial, giving the watch a sleek yet utilitarian look while simultaneously lowering the price. The silver dial shown here was introduced in 2018.Reference 1-37-01-05-02-07 has a calf leather strap with pin buckle.Reference 1-37-01-05-02-35 has a calf leather strap with folding clasp.Reference 1-37-01-05-02-55 has a calf leather strap with shorter folding clasp.