Drive method: TMI (manufactured by SEIKO) Automatic winding: NH35A Manual winding function, calendar hack function included *24 jewels Power reserve 40 hours Frequency: 21,600 Daily difference: -35 seconds to +45 seconds br>Weight: Approximately 150 grams (product body) Manufacturing: Main assembly: Hong Kong. Final installation: Japan Comparez les prix de: Hayatospeed in Montres