... save energy Quality Sound Handfree Bluetooth Speaker1.3.0 HD transimittion mini bluetooth speaker2.Bulit-in rechargable battery, ... with high Sensivity condenser mic for clear voice reception4.automatic bluetooth pairing,Compatible for iphones, ipads, Android Smartphones, Tablets ... Notebooks5. ECO energy saving design (auto off when no Bluetooth signal is detected in 2 minutes)Package details: QTY12pcs ...