Product name: ws-858 bluetooth microphone Product size: 23.5 x 7.5 x 7.5cm/9.25 x 2.95 x 2.95in Packing size: 25.5 x 10 x 8.5cm/10.04 x 3.94 x 3.35in Net weight: 412g Gross weight: 547g Material: ABS shell, aluminum alloy handle, steel mesh cover Input voltage: 5V Power supply: USB power supply Battery capacity: 1800mA Quantity of speakers: 2 Connection mode: mobile phone bluetooth