Features: Wireless Transmission System: a low latency and good quality MIDI system that it is specifically designed for teaching, performance, and practice. Point-to-point MIDI Connection: instead of your MIDI cable, it gives you a sense of wireless and unconstrained free experience. Specific Protocol: new technology more suitable for live and performance, with ultra-low latency connection, safe and stable connection and long-distance wireless coverage. Ultra-low Latency: MIDI system directly implements wireless MIDI protocol in firmware, so latency time is reduced, as low as 3 milliseconds, optimized connection algorithm intelligently. Safe and Stable: MIDI system is used to establish a very stable connection. Rechargeable: MIDI B can be directly connected to supply or PC through adapter to obtain required , MIDI A is equipped with a built-in rechargeable battery. Better Shape Compatibility: unique curved cable design, even rare vertical interface can also be used. Upgradable: use supporting software to upgrade system through data cable. Specifications: Material: ABS Operating Band: 2.4GHz Latency: