Products Description AT-110Maximum Output Power: 180W (4Ω Load)Total Harmonic Distortion: <0.5%Frequency Response: 35Hz-18kHzDriver Configuration:1×10" Woofer: 120mm Magnet, 35mm Voice CoilHorn Tweeter: 80mm Magnet, 25mm Voice CoilPower Supply: AC 220V/50HzBuilt-in Battery: 12V/7.2Ah ×1Wireless Receiver Module: UHF BandOptional Wireless Microphones: 2 units (handheld/lavalier/headworn)AT-120Maximum Output Power: 200W (4Ω Load)Total Harmonic Distortion: <0.5%Frequency Response: 35Hz-18kHzDriver Configuration:1×10" Woofer: 120mm Magnet, 35mm Voice CoilHorn Tweeter: 80mm Magnet, 25mm Voice CoilPower Supply: AC 220V/50HzBuilt-in Battery: 12V/12Ah ×1Wireless Receiver Module: UHF BandOptional Wireless Microphones: 2 units (handheld/lavalier/headworn)AT-150 Maximum Output Power: 250W (4Ω Load)Total Harmonic Distortion: <0.5%Frequency Response: 35Hz-18kHzDriver Configuration:1×10" Woofer: 120mm Magnet, 35mm Voice CoilHorn Tweeter: 80mm Magnet, 25mm Voice CoilPower Supply: AC 220V/50HzBuilt-in Battery: 12V/12Ah ×1Wireless Receiver Module: UHF BandOptional Wireless Microphones: 2 units (handheld/lavalier/headworn)