U Port With Screen Mini TDV26 Card Bluetooth Speaker $ 7.88 Product information: Power supply mode: built-in lithium battery Color: pink, green, blue, black, silver, red Frequency response range: 60Hz-15KHz Interface type: USB Packing list: box + charging cable + speaker Applicable people: general Specifications: Bluetooth version Battery capacity: 300M Shell material: metal Operation mode: button Function: card, radio Product size: 555 cm Material: aluminum alloy Battery: Built-in polymer battery (lithium battery) 550mAH Output power: RMS 3W mono THD=10% Frequency response: 150-18000Hz (3dB) Signal-to-noise ratio: 80dB Speaker: 1.77 inches (outer diameter 45MM) anti-magnetic, 4 ohms LINE In interface: original line connection is required (speaker comes standard) Packing list: 1Charging cable 1speaker Product Image: