Henry Palmer 
Master slave switching & bluetooth 5.0: Freely master-slave switching, most advanced Bluetooth 5.0 technology. Supports HSP, HFP, A2DP, AVRCP. Otium T21 bluetooth earbuds brings you super tws, super fast connect, super easy pairing, super stable.
Master slave switching & bluetooth 5.0: Freely master-slave switching, most advanced Bluetooth 5.0 technology. Supports HSP, HFP, A2DP, AVRCP. Otium T21 bluetooth earbuds brings you super tws, super fast connect, super easy pairing, super stable.
