Long Life -- Up to 6-hour battery life. Using type-c it only takes 2.5 hours to charge up. Each unit includes an 800 mAH battery for excellent battery life and the bright battery life indicator so you know when to charge. The package of GWU4 comes with Y-style USB cable to charge both dongles with a single cable simultaneously.
Easy & Reliable --Simply plug in the transmitter to your instrument jack and the receiving unit to an amp, sound board, audio interface, or any compatible audio device and enjoy an easy, wireless setup.
Auto Match -- 4 individual channels. A single transmitter can work with multiple receivers simultaneously.

Transfer Distance 30 M
Latency 0.3 ms
Input Dynamic 103dB
Frequency UHF
Number of Channels 4
Signal-Noise Ratio 103dB
Distortion 0.15 %
Battery Capacity 800mAh
Battery Life Transmitter (INST) 6 hours; Receiver (AMP) 9 hours
Charging Requirements 5V 1A. Only support USB-C to USB-A cable, original cable is recommended
Working Temperature -10~60
Dimension 190mm (L) *30mm (H) * 20mm (W)
Weight 0.2 kg