Feature: 1. UHF Wireless Transmitter for Guitar Instrument: using UHF high frequency noise reduction wireless technology, the transmission can reach 50 meters, the signal is stable, and the performance is more wonderful. 2. Transmitter LED Screen Signal Display: can clearly and intuitively see the frequency, volume, power and other prompt functions. 3. 90-degree Rotation Audio Plug: the 6.35mm plug of transmitter and receiver can rotate at any 90 degrees, which makes it convenient to insert the instrument audio hole and use more flexibly. 4. Endurance: built in rechargeable polymer lithium battery, equipped with a charging line, the receiver and transmitter can be charged at the same time with a power bank or 5V charging head. 5. 6.35mm Standard Audio Plug: after the frequency matching between transmitter and receiver is successful, insert the transmitter into electric guitar, electric bass, electronic piano and other plug-in instruments, and insert the receiver into the amplifier equipment such as the speaker, then it is ready to use. Specification: Item Type: Wireless Transmitter and Receiver Material: ABS Transmission Mode: UHF Audio Output: Mix output Pairing: Automatic Frequency Range: 550~950MHz Power Consumption: <110mA Power Supply: Built in 3.7V 750mAh li polymer battery Item Size: 125 x 31 x 22mm / 4.92 x 1.22 x 0.87in Item Weight: 79g / 2.80oz. Package List: 1 x Transmitter 1 x Receiver 1 x USB Cable