... Voice Handsfree 4) Dual battery 5)Alloy steel Air Bass MINI New Doss Asimom Portable Bluetooth Speaker with Phone function ... shell,Alloy steel,antiwear3. Exquisite design,easy cooperating.4. Pneumatic pressure cone technology,neodymium iron boron speaker, ... 6. SIG certified bluetooth V2.1+EDR7. Using for meeting,travelling,car kit,children teaching. MINI New Doss Asimom Portable Bluetooth Speaker with ...