The world's first solar mechanical watch -- creative products ---- Kupin.com

This is the world's first mechanical watch powered by solar energy. It uses a highly efficient silicon wafer solar lithium battery as a driving energy source, and uses a new bracelet, journal, drum and vertical tourbillon. The internal structure of the watch is also quite complex: two brushless motors provide power for the clockwork rewind and set the time, and a small controller for adjusting the motor speed and amplifying the electronic signal. Such a luxurious high-tech watch is expected to sell for $560,000.