Introductions: The 61Key Digital Piano Folding Piano Semi-Weighted Standard Keyboards Digital Piano Design adopts superior quality custom Dream Sound source which can bring you the most striking sound effects. Our 61 key piano with two Dual Bluetooth，Audio Bluetooth and MIDI Bluetooth，Connect a COMPUTER or tablet with a USB cable for multimedia interaction. After the piano is turned on bluetooth will be automatically turned on. The mobile phone can search the MIDI Bluetooth signal of this piano. After the connection the playing software on the mobile phone can realize the wireless connection with the piano. it can also be used as a gift for relatives and friends or as a prop for theatrical performances. Specifications: Piano Color: Black color Piano Dimensions:31.69inx6.96inx2.28in （without metal stand） Keyboard key Dimensions: White key width is 0.787in Package Dimensions:20.47 in x 10.62 in x 6.69 in Package Weight: 6.16 lbs/ 2.8kg Model：GPP-204 Keyboard Number of keys: 61Key Action: Full Size Semi-Weighted Action Key Type: Piano-style Metronome：Yes Split/transpose control: Yes Sounds Sound Source:Superior Quality Custom Dream Sound Source Polyphony (max): 8-note Demo Songs:80 Rhythm:200 Timbre:200 Connectivity MIDI Connectivity: MIDI over MIDI Bluetooth Bluetooth：Audio Bluetooth and MIDI Bluetooth USB MIDI Connectivity: Yes Recording：Yes Headphone Jacks: 1 (1/8 Jack) Expandability Available: No AUX Input: Yes Line Output: Yes Line Input: Yes One Pedal System： Sustain Pedal