Comfortable Bluetooth Speaker Backpack silvery bottom surface with two naturals pattern Q-04

     Speaker Specifications: D40mm 3Ω/5W*2

     Charge Voltage:5V,3.7V (Lithium battery)

     Power Output:2*5W

     SNR:Better than 88DB

     Degree Of Distortion:3W/CH(5V Power,4Ω load,10%THD)

     Efficiency:Better than 90%

     Channel Balance:Less than 1DB

     STEREO SEPARATION: More than 40DB

     20HZ-20KHZ   FREQUENCY RANGE:120HZ-20KHZ

     FM RECEIVING SENSITIVITY:LESS THAN 1DB

     FM S/N RATIO:BETTER THAN 60DB

     FM STEREO SEPARATION:MORE THAN 40DB

      FM STEREO LNDICATOR ON SENSITIVITY LEVEL:28DB