Backpack speaker bag Support TF card With FM radio With flashlight With Lithium battery rechargeable Function buttons

Backpack speaker bagSupport TF cardWith FM radioWith flashlightWith Lithium battery rechargeableFunction buttons function:'mode','Pause','Volume-/ Backward','Volume+/ Forward'Color: black,white,pink,blue,orrange                                                                                                                     Accessory:audio cable,charge cable

Technical details : Power supplier:  3.7V/1000MA   USB/Li-ion battery.Output:  RMS 1WFrequency:   100Hz-20KHzSenstitivity:  ≥80 dbPower input:  USB 5VDriver unit:  28mm, 4ΩLi-ion battery: grade ASize: 99*46*19mm"Transparent box packingQTY: 20PCS/CTNN.W: 17.4KGSG.W: 18.4KGSMEAS:44*41.5*28CM"