Technical Specifications (from box):
Model: SP-3121D
Speaker Configuration: 10" \times 2 + 1.5"
This typically means two 10-inch woofers (for bass/mid-range) and one 1.5-inch tweeter (for high frequencies).
Output Power: 120W
Input Sensitivity: \le 1V
Frequency Response: 40Hz - 22KHz
This is a wide range, indicating good bass depth and crisp highs.
Signal-to-Noise Ratio (SNR): \ge 85dB
Power Adapter Input: AC 110V-240V 50/60Hz
Battery: 12V/7500mAh (7.5Ah)
Packing Size (L x W x H): 1490mm \times 380mm \times 650mm
Unit Weight (N.W.): 20.0KG (Net Weight)