• two movement time locks offer single redundancy to offer built in movement backup at a reduced cost
• all movements are precision 13 jewel swiss mechanisms
• 144 hour standard
• movements cannot be back wound if over set
• U.L. standard 887
• includes durable winding charts for easy calculation of winding times
• complete with self adhesive label to indicatethe presence of a time lock

144 hour standard standard movements cannot be back-wound if over-set