1、Built in 4 Channels: This guitar wireless system has 4 built in channels, and 4 B1 LITEs can work at the same time to create personalized sound effects 2、Strong Compatibility: Not only compatible for ST, for LP type electric guitars, acoustic guitars, electric blowpipes, electric drums, but also with dozens of speakers, compatible with most speaker interface positions 3、Diverse Gameplay: This is wireless system with various gameplay and more possibilities. One transmitter can be used with multiple receivers 4、4GHz Guitar Wireless System: 4GHz guitar wireless system, with outstanding sound quality, wireless enjoyment, and stable music experience 5、Wide Use: The resolution is more professional, and every performance detail is protected, widely used for home practice, recording studio and even stage performances 1 x Receiver1 x Transmitter1 x User Manual 1 x USB Cable Item Type: 2.4GHz Guitar Wireless SystemMaterial: MetalColour: BlackInput Impedance: 1MΩBattery Capacity: Transmitter: 500mAh/ 3.7V Lithium Battery x 1 (Shipped with built in battery)Receiver: 500mAh/ 3.7V Lithium Battery x 1 (Shipped with built in battery)Frequency Response Range: 20Hz-20kHzWorking Frequency Band: 2.4GHzTotal Harmonic Distortion: < 0.2%