Bontempi - 4-Element Drum Kit with Electronic Partner - Complete with Stool and Sticks, 52 5602. 4-Element Drum Kit: 385 mm diameter bass drum with pedal; 2 drums diameter 170 and 210 mm; Metal plate diameter 210 mm; 2 wands; Realistic sounds; Electronic "Partner" form; The light and sound impulses lead to the rhythmic accompaniment; 7 rhythms; 14 memorized songs to accompany; 4 levels of learning; Volume regulator; Start/Stop function; Alim: 3 x 1.5V R6/AA batteries (not included); Comes with stool and 2 wands.