mini bluetooth speaker x3 boombox style tf usb fm wireless portable music sound box subwoofer loudspeakers with mic caixa de som lowest

[xlmodel]-[custom]-[8888].by brand heyker.features:.* support bluetooth/line in audio connection, fm radio, tf card, hards-calling.* support l2cap/a2dp(avctp/avdtp/avrcp), hsp/hfp.* voice guidance.* built-in mic.* built-in rechargeable and detachable li-ion battery.* 4 keys operation.1).mode key(switch to bluetooth/usb/tf card/fm radio/line in audio).2).last song/turn down volume when press long.3).next song/turn up volume when press long.4).make a call in phone, the pause/play press twice