Mini Wireless Dongle Csr 4.0 Bluetooth Adapter V4.0 Usb 2.0/3.0 For Win 7/8/10/Xp For Vista 32/64 4191026525311

KeShen

Specification:     1. Model : BTD-401   2. Chipset : CSR8510   3. Interface : USB 2.0   4. Voltage : DC 5V   5.