Features:Mini 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 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: ABSOperating Band: 2.4GHzLatency: Range: 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: 240mAhMIDI-A OUT Single Body Size: 52 * 20 * 18mm / 2.05 * 0.79 * 0.71inMIDI-A IN Single Body Size: 30 * 20 * 18mm / 1.18 * 0.79 * 0.71inMidi-B Single Body Size: 48 * 20 * 10mm / 1.89 * 0.79 * 0.39inItem Weight: 43g / 1.52ozPackage Weight: 69g / 2.46ozPackage Size: 11.5 * 6.5 * 2.5cm / 4.53 * 2.56 * 0.98inPacking List:1 * MIDI-A1 * MIDI-B1 * USB Cable1 * Manual (English)