1. They believe in the Trinity,
2. They believe in keeping 10 commandments and the Saturday Sabbath.
3. They believe that the Catholic church is the great whore of Babylon and that all other protestant churches are her daughters.
4. They believe that once Sunday worship becomes mandatory everyone who worships on Sunday will receive the mark of the beast (they believe that the Catholic church changed the Sabbath from Saturday to Sunday by her own authority over the scripture. Convert's Catechism of Catholic doctrine page 50.)
5. They reject the immortal soul and eternal hell.
6. They believe that Christ is Michael the archangel.
7. They believe in keeping the clean and unclean animals rules.
8. They believe that after the millennium once satan and the wicked are destroyed.. The earth will be re-created.
I'm not an Adventist but i have studied their material.
WARNING- I was once a Seventh Day Adventists member, they are teaching false doctrine which will misleading or direct you the wrong understanding of the truths or idea. Please rely on the bible interpret you alone then men.