Feature:1. 100m/330ft transmission distance, Uband frequency, longer transmission distance, more stable and clear sound quality.2. The transmitter and receiver are 750MA builtin lithium batteries, which can last for 56 hours of lithium battery life.3. Strong antiinterference performance, longer distance through wall and obstacles.4. Builtin damping shaft, 270 degree rotation to adjust the orientation, provide more possibility.5. Plug and play, convenient to operate, with lossless sound quality, good guitar audio system.Specification:Item Type: Guitar Audio SystemMaterial: ABSColor: As Picture ShownWeight: Approx. 158.0g/5.6ozWorking Channel: 20CHReceiving Sensitivity: -90dBmFrequency Response Range: 20-20000HzSending and Receiving Distance: 100mFrequency Range: U FrequencyDelay Time: <0.5msSampling Rate: 64KHz 16bitNoise Ratio: 95dBDistortion: 0.3% 1KHzDynamic Range: 90dBBattery Capacity: 750mah.Package List:1 x Transmitter1 x Receiver1 x Charging Cable1 x Manual