61 keys-black [standard edition] can simulate 88 tones 61 keys-white [standard edition] can simulate 88 tones 61 key-black [light and pop-up version] can simulate 88 sound 61 key-white [light and pop-up version] can simulate 88 sound ---- the following is the 88-key full range---- 88 key-black [standard edition] strength weight key 88 key-white [standard edition] force weight key 88 key-black [bluetooth and pop-up version] strength weight key 88 key-white [bluetooth and pop-up version] strength weight key 88 key-black [bluetooth light and bullet] strength weight key 88 key-white [bluetooth light and bullet] strength weight key

official standard (including basic gift package) package 1: official configuration + upgrade gift package package 2: official configuration + upgrade package + guitar bag package 3: official configuration + upgrade package + keyboard stand package 4: official configuration + upgrade package + keyboard stand + guitar bag package 5: official configuration + upgrade gift package + keyboard stand + piano stool package 6: official configuration + upgrade gift bag + keyboard stand + stool + bag