Boss WL-20

Plug-and-play wireless systems for guitar, bass, and other electronic instruments
No complicated setup required—simply dock the transmitter and receiver together for about 10 seconds to set the optimum wireless connection
Newly developed BOSS technology delivers premium audio performance with rock-solid stability, ultra-low latency (2.3 ms), and 50-foot/15-meter range
Built-in rechargeable batteries provide up to 12 hours of continuous playing time
Simple charging with a standard USB adaptor (5 V/500 mA or greater)
Cable tone simulation reproduces the natural capacitive effect of a 10-foot/3-meter guitar cable (WL-20 model only)
Spare WL-T Transmitter available separately