Feature: 1. Wireless Receiver and Transmitter: The kit contains a wireless receiver and transmitter, with built in batteries, allows long term use 2. Simple to Use: The guitar receiver and transmitter are plug and play with standard plug, flexible and convenient to use 3. Full Frequency Response: The transmitter have full frequency response, the signal transmission is stable and clear 4. High Strength Shell: The shell is made of excellent ABS material, high strength, not easy to damage, sturdy and durable 5. Wide Compatibility: This wireless guitar system is suitable for most electric guitars, basses, electric acoustic guitars Specification: Item Type: Guitar Receiver Transmitter Set Material: ABS, electronic components Colour: Black Frequency Bandwidth: 20Hz-20KHz Green: Channel 1 Red: Channel 2 Blue: Channel 3 White: Channel 4 Battery Required: Receiver: 1 x lithium battery Battery Model: 3.7V 600mah (built in) Transmitter: 1 x lithium battery Battery Model: 3.7V 600mah (built in). Package List: 1 x Guitar Transmitter 1 x Guitar Receiver1 x Data Cable