XIAOKOA Rechargeable Electronic Guitar Wireless System Wireless transmitters and receivers can be used for electro acoustic instruments such as guitars, bass, violins, etc. Easy to use, plug and play. Wireless Guitar Transmitter Receiver LED Display You can intuitively learn and master the frequency, volume and power and adjust them easily. 6.35mm Jack We also offer 3.5mm adapter (included) for receiver to connect more amplifier equipment. 270 Rotatable Plug Design Available for instruments with input jack in different positions. Multiple Pairing Support up to 15 sets of musical instruments working at the same time. Durable Battery Built-in 500 mAh rechargeable battery, if fully charged, the system can work for about 6 hours. Long Distance Transmission The maximum transmission range is 164ft/50m. The optimal transmission range is 65ft/20m. The wireless transmitter and receiver are ideal for various occasions. Widely used in different occasions, such as concert, symphony, teaching, street performance and so on.