Piano Mat Supplier in China Supplies Gigantic Piano Mat, 4 Modes Selection, Adjustable Volume, 8 Musical Instruments, Black & White, Music Mat. Information: Series: Instruments Name: Gigantic Keyboard Playmat Item SLW968 Mat Size: 180 x 74 cm Package Size: 86 x 8 x 40 cm Battery: 4 x 1.5V âAAâ (not included)Product Specifications: 4 modes to select: record, play back, DEMO, play 8 musical instruments to change tone Adjustable volume Touch sensitive