Usage Tips:Features:Mini Wireless Transmission System: a low latency and 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: 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 the wireless MIDI protocol in the firmware, so the 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 the power supply or PC through the adapter to obtain the required power, MIDI A is equipped with a built-in rechargeable lithium battery.Better Shape Compatibility: unique curved cable design, even the rare vertical interface can also be used.Upgradable: use the supporting software to upgrade the system through the data cable.Specifications:Material: ABSColour: BlackOperating Band: 2.4GHzLatency: Less than 3msRange: ≤10m transmission distancePower Requirement: MIDI A built-in lithium battery can be charged by USB cableBattery Life: Up to 48 hoursCharging Device: USB charging cableBattery: 240mAhPackage Contents:1 x MIDI-A Adapter1 x MIDI-B Adapter1 x Type-c Cable1 x Manual (English)Only the above package content, other products are not included.Note: Light reflection 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.