Brand: sayona 2.1ch speaker with usb/sd/digital fm remote control/led display/bluetooth function frequency response: 120hz -20khz model number : sht-1253bt dimension: w280* h330 * d317mm output power: 70w power: 220-240v / 50-60hz frequency response: 40hz-150hz speaker drive unit: 8′′ s/n ratio: 70db dimensions: w280mm x h330mm x d317mm output power: 25w x 2 satellite driver unit: 3′′ x 4 dimensions: w145mm x h500mm x d130mm high tech multimedia super bass surround woofer active speaker system