1. 37-key Force Sensitive MIDI Keyboard with Three Octave Interval Ranges. Pull Spring Piano Keys Provide a Comfortable Feel with Rapid Rebound. 2. 1.54-inch Display Screen. 3. Solid Tone Pitch Wheel and Modulation Wheel. 4. Backlit Silicone Button Design, Silent and Responsive When Pressed, Making Your Music Experience More Pure. 5. 8 Sets of 360-degree Rotary Encoders, Finely Adjusted and Freely Controlled, Presenting More Precise Details. 16 RGB Backlit Impact Pads That Can Sense Changes in Intensity and Provide Feedback After Touch, Making Your Rhythm More Vivid and Powerful. 4 Entity Promoters, Which Can Be Expanded to 8 Using the Promoter Library. 3.5mm MIDI Input/Output Interface, 6.5mm Sustain/ Pedal Interface. Built-in Arpeggios and Note Repeat Function, Enriching Rhythm Levels and Giving You Unlimited Possibilities for Performing Music. Built-in Sequencer, Supports Saving 8 Sets of Prefabrication. Eight Degree/Shift Switch. Output: USB-C, Wireless MIDI/OUT Function. Support Wireless Connection to //iOS/Android ( Users Need to Support BT 5.0 and Additional BLE MIDI Drivers). Supports Multi-terminal Software Operations for , , IOS, and Android. Compatible with All Digital Audio Workstations. Built-in Audio Source: This Device Has a Built-in Audio Source (Synthesizer Engine) That Can the Classic DX-7 FM Synthesizer. Size (cm): 48 x 21.2 x 7.2cm Color: White Material: ABS Package Contents: 1 * Midi Keyboard Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.