mini aluminum speaker with microphone with TF card & U disk built-in 3.5 mm audio line CE and FCC

Technical ParameterOutput power: RMS 3W THD=10%Frequency Response:150-18000KHZLoud Speaker:  1.5inch; 4ΩSignal and noise ratio: ≥80dBOutput:  3.7V*4.2VInput:  5.0VAccessories USB power supply cable slingFunction1.Support TF card, U disk2.Earphone  PackingProduct size: 5.2*4.9*5.2cmColor box size: 10.4*5.2*5.5cmCarton size: 34.5*29.5*41.5cmQTY/CTN: 50pcsN.W/G.W: 8.3kg/9.3kg

Portable mini aluminum speaker with TF card & U disk