Product Name: Guitar AmplifierModel Number: PWMA-3600Place of Origin: ChinaFeatures: 1) Operating frequency: 228.10MHz 2) Frequency response: 100Hz - 15kHz +/- 3dB 3) Dynamic range: 90dB 4) Output power: 10W 5) Speaker type: 8\'\' full range / 2.5 tweeter 6) Internal battery: 6V, 4A x 3 7) Recharge time / usable time: 4h/8h 8) Weight: 30.5lbs (13.85kg) 9) Dimensions: 23.8 x 10.2 x 13.4