China Grassland Music Mat Supplier Sunlin Provides Grassland Keyboard Mat, Piano Mode & Demo Mode, 80 x 35 cm, 8 Preprogrammed Tunes, 8 Keys. Product Specifications: Series: Instruments Name: Grassland Piano Playmat Item SLW9380 Mat Size: 80 x 35 cm Package Size: 39 x 28 x5 cm Battery: 2 x 1.5V âAAâ (not included) Information: 2 modes to select: piano mode and Demo mode 8 keys 8 preprogrammed tunes Follow me memory game Touch sensitive playmat