- 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