[DETAIL] Product features: �� Supports connecting 5 Bluetooth devices at the same time �� adopt dual-mode transmission that truly conforms to Bluetooth 5.4 technical standard. �� transmission distance: 20m, ultra long transmission distance (no barrier), strong signal. �� transmission rate: 3mbps transmission rate, providing high-speed file and audio data transmission. �� the original driver management software is easy to use, powerful and supports a variety of application expansion. �� ultra low delay and high-speed link, intelligent sleep wake-up, energy saving, 24 bit CRC verification to resist interference, adaptive frequency hopping to reduce crosstalk. �� fully downward compatible with Bluetooth 2.0, Bluetooth 2.1 and Bluetooth 3.0 specifications. ��USB2. 0 interface is more universal, super mini body and portable. �� supporting system: / win8 / 8.1/win10/win11 (win8 / 10 / 11 system drive free) [ATTRIBUTES] - Hign-concerned Chemical: None - High Definition Support: 720p - Content: Audio&Video - Hign-concerned Chemical: None - High Definition Support: 720p - Content: Audio&Video - WIFI Standard: 5g - Wireless Type: Bluetooth - Interface: USB - Brand Name: OLOPKY - Origin: Mainland China