Louis Cartier created the Tank watch in 1917. A legend was born. The lugs blend seamlessly into the bare edges of the flat vertical brancards, giving the watch its unique aesthetic. The clean, crisp lines have proved hugely popular with a free-spirited, elegant clientèle. The now-iconic Tank watch has inspired countless variations, yet managed to preserve its distinctive identity. Tank Must watch, small model, photovoltaic SolarBeat™ movement. Steel case, beaded crown set with a synthetic cabochon-shaped spinel, silvered dial, blued-steel sword-shaped hands, black strap (made without animal materials), steel ardillon buckle.