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Boss WL-20 Wireless System, Plug-and-play wireless systems for electric guitar & bass wth passive Hi-Z pickups, 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 (line-of-sight propagation), 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, dimensions (W x D x H): 87 x 25 x 38 mm, (3,44 x 1 x 1,5), weight: 60 g (0,13 lbs)