Dosmix Wireless Stereo Retro Speakers Portable Bluetooth Vintage Speakers with Hands Free Calls Connectable SD Card Slot AUX

New Arrival Dosmix Portable Bluetooth Speaker Retro Mini Portable Wirele Speaker USB/TF Card Music Player Subwoofer Speaker

Main Feature:ht: 190gPlay time: 2-3hCharging time: about 1.5hBattery capacity: 400mAHTF card maximum expansion capacity: 32G1. Turn on/off, pre 4 seconds. Bluetooth indicate light flicker and into bluetooth match mode, turn off pre 4 seconds too2. Play/Pa: short pre will alternate play and pa. Double pre will change mode3. When receive calling, short pre to answer call, double pre will ref the call4. Double pre will call the latest calling person when speaker on normal model5. Volume adjust: rotate can adjust volume6. Insert audio wire ar turn on the speaker, will into AUX mode automaticUSB read: can insert USB to listen music