Mini USB Bluetooth Adapter V 4.0 Dual Mode Wireless Dongle Wholesale CSR 4.0 USB 2.0/3.0 For Win7 Vista XP 32/64 Win8 Black

Features:
Mini USB Bluetooth 4.0 adapter with high speed up to 3Mbps.
Simple pairing, good anti-jamming features, no need to down drive.
Dual-mode Bluetooth transfer.
Low-power selectable 1.2 to 3.6 VI/O.
Supporting Bluetooth voice data.
Supporting multi languages.
Backward compatible with Bluetooth v1.2/2.0/2.1/3.0.