About this item ZEB-BT6590RUCF is a 5.1 multimedia speaker with aspects like BT/USB/SD/MMC/AUX. The speaker has an LED display and an FM radio. Satellite drive size : 6.8cm (2.7) x 5. Memory Card Slot : Yes It also has a fully functional remote control. Features- Bluetooth function, USB input, LED display, SD/MMC card support, FM Radio, remote control and stylish design Frequency response 40Hz - 20KHz , Bluetooth Frequency :2.402GHz-2.480GHz ,Power sensitivity :80dB/mv and Data rates :1.8 Mbps-2.1Mbps Warranty - 1 year from the date of purchase Subwoofer Dimension: 140x275x257mm(WxDxH); Satellite Dimension: Center 90x80x130mm(WxDxH), Front 90x80x130mm(WxDxH), Rear 90x80x130mm (WxDxH)