Features:

Simple pairing
Good anti-jamming
Bluetooth low energy Radio USB Dongle
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

Specifications:
Version: CSR4.0
Chipset: CSR8510
Operation system: Windows 98, 98 se, Me, 2000, XP, Vista, Windows7/Windows8/Windows10 32&64Bit
Interface: USB compliance
Rate: 3Mbps
Receiving/Sending range: 20m
100% Compatible With Bluetooth Headphone and Speaker
Certifications: FCC, CE
Product size: 2.3 * 1.2 * 0.4cm
Package size: 13.1 * 10.7 * 0.5cm
Package weight: 23g

Package Contents

1PCS Mini USB 2.0 Bluetooth V4.0 Dongle Wireless Adapter For PC Laptop 3Mbps Speed