China Music Mat Supplier Sunlin Supplies Mini 2 in 1 Music Jam Mat, Baby Mat, 70 x 45 cm, 2 Player, 13 Keys, 4 Instruments To Change Tone, Built-in Demo.Product Specifications: Series: Instruments Name: Mini 2 in 1 Music Jam Playmat Item SLW9382 Mat Size: 70 x 45 cm Package Size: 39 x 28 x5 cm Battery: 2 x 1.5V âAAâ (not included) Information: For 2 player 13 keys 5 instrument beating areas 4 instruments to change tone Built-in demo Touch sensitive playmat Adjustable volume