Our guitar wireless system uses a standard 6.35mm plug and adopts 2.4G UHF wireless technology, with a transmission distance of up to 30 meters, which is very suitable for playing, instrument teaching, street performance, vocal concert. Built-in large rechargeable lithium battery, it can be used for 10 hours after fully , and the battery life is long. Plug and Play - Just press the switch of the transmitter and receiver, plug the transmitter into the guitar, plug the receiver into the speaker, and it start working immediately. The plug can be rotated 220 freely, and it is easy to plug into the device at any angle. Suitable for the most popular electronic instruments such as guitar, bass, piano, violin, organ, drums and keyboards, etc. 16-bit/48KHz high-quality audio broadcasting and 10Hz-22kHz full-frequency response for more stable and clearer signal transmission. Portable and Widely Used - Simple and stylish design. Its compact size is convenient for wireless audio playback anytime, anywhere. Two additional 6.5mm conversion heads are provided, which are widely compatible with small speakers, computers and mp3, etc. Color: Black Material: Plastic Package Contents: 1 x Receiver 1 x Transmitter 2 x 6.5mm Adapter 1 x USB Charging Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.