CSR V4.0 Bluetooth 4.0 Adapter Mini Dongle Stick USB 2.0 Dual Mode High Speed
Bluetooth low energy Radio USB Dongle. Bluetooth Version: Bluetooth V4.0+EDR V2.1/2.0/3.0. Dual-mode Bluetooth transfer. Supporting Bluetooth voice data. Compatible with Bluetooth v1.2/2.0/2.1/3.0/4.0.