Products Name:KUBT B-010 BlueProducts Medol:B-010 BlueProducts Detail:Output: RMS 3.5w×2RF:80Hz-20KHzS/N Ratio:≥85dBImpedance: 4 ohmPower Source: DC5VWeight: 456 gBox Size: 46.2*39*54 cmPer/Box: 40 pcs