Tissot PRX Powermatic 80 40mm T137.407.11.091.01The Tissot T137. 407. 11. 091. 01 is powered by the Powermatic 80. 111 automatic movement, which boasts a power reserve of up to 80 hours, which is twice as high as is common with automatic movements in this price range. It is fitted with 23 jewels and its 21,600 semi frequencies per hour can be observed through the transparent dial. The movement is "built" on the basis of the ETA 2824 variant. The flywheel of this movement is made of Nivachron alloy,