Edifier MP230 Portable speaker, Black. RMS rated power: 2.5 W, Impedance: 10000 Ом, Signal-to-Noise Ratio (SNR): 85 dB. Battery type: AA. Dimensions (WxDxH): 218 x 27 x 76 mm. Colour of product: Black. Gross weight packaging: 0.63 kg