Vintage Omega Seamaster F 300hz electronic chronometer. These are very unique movements, which are powered by vibration. With a floating second hand which turns smoothly, and the movement makes a humming sound. The calibre 1250 Omega tuning fork movement runs well. Rev. 198.0044 Movement no. 36.......... dates the year of production / manufacture to 1973 Case size: 38 x 43 mm, 80 microns gold plated, with minor signs of wear. Omega 20 microns gold plated steel strap, wrist size approx. 19/20 cm, no. 12 1198, has signs of wear. New scratch-free, real glass. Watch comes in new, after-market box. Maintenance history is unknown. Battery was recently replaced, movement runs well. Shipping: well-packaged, registered and insured.