The Tissot Seastart 100 Automatic Chronograph is an oversized dive watch with an automatic chronograph movement - caliber C01.211. Its stainless steel case measures 48mm across and is water resistant up to 300 meters. On this version, the divers style bezel is done in ceramic.
Automatic chronograph movement with date window. Introduced in 2008-2009 as the result Tissot asking ETA to develop a Swiss made chronograph movement suitable for large-scale production at low cost, though collectors soon recognized the famed Lemania 5100 in the lay-out. The latter was mostly seen in military- and tool-watches and discontinued in the early 2000's. The new C01.211 is mostly (or only?) found in the lower segment brands of the Swatch Group.
(also known as T0664271705702)