Donner DED-70 is a 7-piece junior kit that bundles four 6.5" dual-layer mesh heads, three 9" oversize rubber cymbals, rock-solid metal rack, module, throne, sticks and headphones into an apartment-quiet 41.34" footprint; 150 voices, 15 user kits and 10 demos cover rock to pop without menu diving, headphone practice keeps the neighbors happy while aux-in lets kids jam along to tracks from any phone or tablet, height-adjustable, fold-flat frame grows with players 6-14 and runs on the included adapter or any USB power bank for backyard sessions, plus 40 free Melodics lessons (contact support for codes) turn practice into a scored video game—no subscription needed.