A manually operated reflecting device includes a base, at least one rotary sleeve pivoted to the base, and a release module and an angle-adjustment module disposed between the first and second rotary sleeves and the base. The release module and the angle-adjustment module allow the base to be adjusted and fixed at a certain angle with respect to the first and second rotary sleeves. On the rotary sleeve is disposed a reflecting member. The rotary sleeve is rotated and fixed at a predetermined angle with respect to the base, so as to maintain the reflecting member at a best-view position.