Colour:black Material:plastic Package Contents: 1 x Guitar Transmitter 1 x Guitar Receiver 1 x USB Cable 1 x English manual 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. Built-in Rechargeable Li-battery--Working time is up to 4 after 1.5 . Comes with a dual-ended Micro-USB cable for convenient recharging simultaneously, which ensures good performance for your every show. A must have for guitarist! Plug and Play--Pull up to turn on the power and paired automatically. Press and hold the transmitter for 3 seconds to switch 2 modes. Green light showing on the receiver works in acoustic guitar mode, and blue light works in electric guitar mode. That's how simple it is. No wires, more freedom. High Compatibility--The 1/4inch audio jack, compatible with most electric guitar, violin, drum, bass, keyboard, Bakelite guitar, electric-acoustic guitar and other digital music instruments with pickup. Compact and light-weight design fits any guitar and bass body types. The device are approved for worldwide use. Clear Audio Quality--The wireless guitar transmitter receiver system adopts advanced UHF technology, high frequency which less than 4ms latency, supporting 3 sets of devices working at the same time (1 to 1), no lag or no signal loss. Effective transmission range is about 100 feet. Strong anti-interference ability delivers great audio quality and stable signal and maintains the tone and feel of your instruments and playing. Legible and Easy to Use--One unit is labeled for the guitar (transmitter), and one for the amp (receiver). Literally just plug and go. Unique design is easy to recognize and play. It is the for beginner guitar, professional guitarist, bass player.