... 2) Smart Voice Handsfree DOSS DS-1116 mini portable bluetooth speaker with tf card for iphone ipod ipad 1 ... pressure cone technology,neodymium iron boron speaker,perfect quality sound.5. Dual power,built in 3.7v ... be used as power bank.6. SIG certified bluetooth V2.1+EDR7. Using for meeting,travelling,car ... user manual DOSS DS-1116 mini portable bluetooth speaker with tf card for iphone,ipad,smartphone