Upgraded 88-key Graded Hammer Action, Dual sensor action key design for an authentic touch experience. Upgraded speaker system produces immersive 3D sound. Upgraded audio chip that recreates the true sound of a grand piano. Sleek and slim body with dust cover. 5 Reverb Types, Keyboard Split, Metronome, Bluetooth MIDI, Tempo Adjustment. DDP-200 and DDP-200 MK2 models are shipped in mixed batches.