FR
The stop second is the ability of stopping the second hand while changing time. It gives the watch a better accuracy.
ROLEX
116200
116234
116244
126200
126234
126301
126303
126331
126333
126334
118135
118138
118139
118205
118206
118239
118348
128235
128238
128348RBR
128349RBR
228206