As schnurrp suggested it is a Chinese movement, and I'm not familiar with it. The chinese sea-gull have been doing a great job, especially with chronographs, or so I've heard, but I didn't know the Sekondas are casing sea-gulls nowrdays. This one is a date/month movement, and I don't know what the third subdial does, day/night?
Enjoy your watch, and I do recommend you snap a russian (soviet) made Sekonda when you get a chance. There were Sekonda branded Slavas, Poljots, Vostoks and maybe others. There should be a lot of interesting info on the soviet Sekonda brand in this forum.
Ivan