[BT 5.0 MIDI Adapter] This product is a five-pin round port to BT 5.0 wireless MIDI adapter, specifically designed for digital pianos, electronic pianos, and MIDI keyboards. It transforms your instrument's MIDI port into a BT MIDI, providing higher communication speed and stability. [Easy to Use] Simply connect MIDI IN of product to MIDI OUT of instrument, and MIDI OUT of product to MIDI IN of instrument. If instrument's MIDI port power is insufficient, power product through Micro-USB port. Connect product with a BT MIDI APP to use. [BT Connection] This MIDI adapter supports BT connection to APP, eliminating need for OTG cables. It offers a seamless and wireless connection for a more convenient and efficient musical experience. [Two Power Supply Modes] This MIDI adapter supports two power supply modes: power from MIDI port or external power supply via USB. This ensures that adapter can function properly even when MIDI interface power is insufficient. [Stable Transmission & Quick Response] With its standard five-pin MIDI interface, this adapter ensures stable transmission, strong anti-interference ability, and quick response without delay. It requires a device with a MIDI interface (or at least a MIDI OUT interface) for operation. MIDI Plug: High-performance processing one in one out 16 channel MIDI plug Indicator Light: BT indicator light BT Version: Low energy BT 5.2 Applicable to: iOS, Android systems Applicable to: Apps with Bluetooth MIDI, such as Ku Band, Bubble Piano, Piano Bar, SimplyPiano, etc Color: Black Material: Copper + PVC Package Contents: 1 x Instrument adapter, 1 x USB power cable, 1 x Instructions in Chinese and English Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause color of item in picture to differ slightly from real thing. The measurement allowed error is +/- 1-3cm.