Specification:nBrand: AUTSOMEnColor: BlacknModel:AK45nVoltage: DC 12V or AC 90-240VnImpedance: 4-16 u03a9nBluetooth: SupportnRMS power: 40Wx2nPeak power: 90W x2nChannel: 2.0nSNR: 85 dbnFM Frequency: 87.5-108MHznFrequency: 10Hz-20KHznSize: Approx. 18x14x6.5cm/ 7.09x5.51x2.6""nModel: AK-45nSize: 18*14*6.5CMnRated voltage: 12-240VnRated power: 40W*2nRated frequency: 20-20KHZnResolution: 47KnDistortion rate: 0.50%nSNR: 85DBnImpedance: 4-16u03a9nAmplifier type: HIFI amplifiernMaterial: IronnInterface Type: ClipnReceive method: Audio cable Bluetooth USB SD radionChannel: 2.0 channelnWhether to support APP: not supportednPlug Type: EU/US/AU/UKnWeight: 0.8KGnnPacking list: n1*Power Amplifiern1*Manual n1*Remote Control (Not included the battery)n1*Radio Antennan1* Power CordnnnNote:n1.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need.n2. Please allow 0.5-1 inch difference due to manual measurement.(1inch=2.54cm)n3.There are no instructions included in this kit.If you want to know how to use or install it,please contact us by Email.We will provide help as much as possible.