Note: when you buying with this link, there is an option for MIDI USB SYSTEM ,and an option for the Chocolate MIDI Controller ,there is also an option for USB MIDI SYSTEM PLUS MIDI Controller too . please order with corresponding picture and item. thank you . M-VAVE Chocolate Programmable MIDI Controller 4 Footswitchs Page Turner 2 in 1 Pedal Wireless MIDI System 5-PIN DIN Master Product Features: MIDI Controller is a sturdy and durable 4 tread nails BT smart controller,compact and lightweight. Support programming, standard MIDI, USB MIDI and Bluetooth MIDI. Supports control functions such as music page turning, file page turning, mobile multimedia, etc., making your control more flexible and changeable. By setting different trigger actions to send, the usage scenarios are more extensive. Use the supporting mobile app to customize your MIDI Controller via BT, the operation is simple and direct. 2.5 hours of charging and 12 hours of extended battery life. The display can directly feedback your command, intuitive and clear. Suit for PC, MAC, IOS, ANDROID system. Specifications: : CUVAVE Power Supply: Built-in lithium battery Average working current: 45 mA Power Input: standard 5V direct current. Package Size: 23 * 6 * 4 cm/ 9.1 * 2.4 * 1.6 in Package Weight: 350g/ 12.35 oz Note: only support part of iOS Page turner app,ibook M-VAVE Wireless MIDI System 5-PIN DIN Interface USB MIDI To MIDI for Piano Keyboard Synthesizers Digital Mixers MIDI Device Feature: Wireless connect your iOS/Windows devices (iPhone/iPad/iPod Press) to your instrument,Use music apps without cables and enjoy the freedom that wireless technology brings to your performances. This fully standalone wireless solution boasts low latency, ultra low 3ms latency.and long range (10 meters . without obstructions) for home, studio and stage applications. MIDI A can be connected to the 5-pin MIDI DIN connectors of standard MIDI devices,MIDI B Support the Midi device with USB interface; including electric pianos, electronic keyboards, synthesizers, digital mixers, MIDI controllers, MIDI interfaces, keytars, electric wind instruments,v-accordions, electronic drums, audio interfaces and more! Automatic pairing. Setup instantly. Operate easily. Role automation with instant pairing between two MD1 devices,The other is the Sub Adapter, which receives MIDI messages and sends them through the MIDI IN DIN connector of a MIDI device. Material:Composite material colour:Black Package Contents: 1 x MIDI A 1 x MIDI B 1 x USB Cable 1 x Chinese and English manual Only the above package content, other products are not included. Note: Light shooting 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. Mini Wireless MIDI System 5-PIN DIN/USB Interface Wireless MIDI Master Adapter to MIDI for Piano Keyboard to MIDI /iOS /Windows Product Features: Wirelessly connect your iOS/Windows devices (iPhone/iPad/iPod touch) to your instrument,Use music apps without cables and enjoy the freedom that wireless technology brings to your performances. This fully standalone wireless solution boasts low latency, ultra low 3ms latency.and long range (10 meters . without obstructions) for home, studio and stage applications. MIDIA can be connected to the 5-pin MIDI DIN connectors of standard MIDI devices,MIDIB Support the Midi device with USB interface; including electric pianos, electronic keyboards, synthesizers, digital mixers, MIDI controllers, MIDI interfaces, keytars, electric wind instruments,v-accordions, electronic drums, audio interfaces and more! Automatic pairing. Setup instantly. Operate easily. Role automation with instant pairing between two MD1 devices,The other is the Sub Adapter, which receives MIDI messages and sends them through the MIDI IN DIN connector of a MIDI device. Specifications: Material: ABS Operating Band: 2.4GHz Latency: