Small Smart phone external crystal USB desktop speakers in desktop

Smart phone external crystal USB desktop speakers in desktop

Main Feature:

* support TF card
* Use transparent material
* Bult-in active amplifier
* USB bus-powered capability,
no adapter required
* Conveniently powered via with 
USB cable
* Easily control volume with VOC
on the back
* Durable for long-term use

Specification:

* Power output: 4.8W*2RMS
* Speaker Size: 1.5"*2
* Speaker unit:4Ω3W
* Input sensitivity:400mV
* Distortion: ≤0.2 %(1W 1KHZ)
* Frequency response: 91Hz-20KHZ
* Separation:≥78dB
* S/N Ratio: ≥86dB
* Power Voltage: USB/DC 5V
* Accessories: USB cable, audio cable

Details:

USB & Audio cable : 140cm in total 
conntecting  cable :120cm 
silkscreen logo  
inside magnetic trumpet 
with diaphragm 

Packaging:

Qty: 40PCS/CTN
Gift box:85x115x88mm 
Carton:445x324x374mmm
N.W./CTN: 20KGS
G.W./CTN: 22KGS