Features: Mini Wireless Transmission System: A low-latency, high-quality MIDI system specifically designed for teaching, performance, and practice. Point-to-Point MIDI Connection: Replaces your MIDI cable with a wireless, unrestricted experience. Specific Protocol: Advanced technology optimized for live use and performance, delivering ultra-low latency, stable connection, and extended wireless range. Ultra-Low Latency: The system implements wireless MIDI protocol directly in the firmware, reducing latency to as low as 3 milliseconds with an optimized connection algorithm. Safe and Stable: Ensures a reliable and consistent connection for uninterrupted performance. Rechargeable: MIDI B can be powered via adapter connected to power supply or PC; MIDI A features a built-in rechargeable lithium battery. Better Shape Compatibility: Unique curved cable design allows use with even vertically positioned or hard-to-reach ports. Upgradable: System can be updated using included software and data cable. Specifications: Material: ABS Operating Band: 2.4GHz Latency: As low as 3ms