Bluetooth V4.0 (Backward compatible)
Transmission frequency: 2.402-2.480 GHz
Datatransfer-Speed: 3 Mbit/s
Max. distance: 100 m
Supports APT-X stereo Audio transmission
Connector: USB 2.0 (Comp. to USB 1.1)
Windows® XP, Vista, 7

Version: 4.0 with EDR
Chipset: CSR
Apt-X certification
Support 4 bluetooth devices at the same time
Transmission distance without obstruction: 20M(Max)
Transmission rate:3Mbps(Max)
Frequency: 2.4GHz
Apt-X certification
Do not support APPLE Device
Material: ABS
Support Bluethooth Profiles:apt-X, A2DP V1.2, GAP,
HFP V1.5, HID OVER
CATT, AVRCP V1.4, HSP V1.2, SPP V1.2,
DUN V1.1, OPP 2.2
WIN7/XP needs to download the driver
and install it on the official website of UGREEN

Bluetooth Version: 5.0
Input:USB-A
Support SBC
Multipoint connection: Two Point Connection
Frequency domain: 2.402GHz-2.480GHz
Frequency response: 20Hz-20kHz
SNR(Signal to Noise Ratio):>90dB
Transmit range: Up to 10m/33ft
THD ( total harmonic distortion ): <0.1%

Version: 5.0 BR+EDR,BLE
Support 5 bluetooth devices at the same time
Transmission distance without obstruction: 20M(Max)
Frequency: 2.402GHz-2.480GHz
Do not support APPLE Device
Material: ABS
LED indicator
Support Bluethooth Profiles: A2DP/HSP/AVRCP
/HID/PAN/GAVDP/DID/IOPT
Compatible systems: Windows 7/8.1/10