... --18KHZ S / N :85db Output:4.2VPower:Polymer battery Speaker:3W/4Ω --------------------------------------Bluetooth 2.1+ EDR compliant --Classic hamburger style, Exquisite workmanship ... , Samsung …laptop, PC,etc --Bluetooth speaker + Line-in mini speaker About usWe can supply speaker bag, mini speaker,portable speaker,digital speaker and 2.0/2.1 ...