The Bescor MP-101 motorized pan head fastens between any tripod head and HDslr or video camera. Two motors allow independent smooth remote adjustment of vertical and horizontal panning motion.Auto Pan Mode, allows continuous horizontal panning motion. Switch selector for either a 30, 60 or 90 degree movement. Maximum horizontal angle + and -90 degrees. Maximum vertical angle + and -15 degrees.Size 5.75" x 4.5 x 4". Weight 27 oz.