High-Quality Compact Design：The wireless guitar transmitter & receiver are made out of durable ABS plastic that can withstand the rigors of touring and the harshest of climates. Built-in battery：Wireless Guitar System Built-in rechargeable lithium battery, long working hours, and comes with a USB cable for convenient recharging, which ensures good performance for your every show. Plug-n-Play：Available for instruments with input jack in different positions, plug and play, no need of connection cable, flexible and convenient to use.