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 traditional MIDI cable, providing a wireless and unrestricted experience. Specific Protocol: Advanced technology optimized for live use and performances, delivering ultra-low latency, secure and stable connections, 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 stable MIDI connection. 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 even with rare vertical interfaces. Upgradable: System can be updated using included software and data cable. Specifications: Material: ABS Color: Black Operating Band: 2.4GHz Latency: Less than 3ms Range: Up to 10 meters Power Requirement: MIDI A has a built-in lithium battery charged via USB cable Battery Life: Up to 48 hours Charging Device: USB charging cable Battery Capacity: 240mAh Package Contents: 1 x MIDI-A Adapter 1 x MIDI-B Adapter 1 x Type-C Cable 1 x Manual (English) Note: Light reflection and differences in display screens may cause slight variations between the color of the item in the photo and the actual product. Measurement error allowed is +/- 1-3cm.