originally these were placed there to ensure that the watch didn't slide or fly off the wrist whilst the pilot was in flight

interchangeable strap or bracelet

a date display at 3 o'clock

creating an unparalleled visual depth

Plein Sport Thunderstorm Chrono Men's Black Watch Movement_Solar (Battery) originally these were placed thereAlways paving the way with boldness, the new PLEIN SPORT Thunderstorm Chrono delivers ultimate elegance and sporting performance. Bound to stand out, this timepiece is ready to go beyond what you thought was possible. From the tiger on the crown to the scratch on the dial, nothing is left to chance.