Specification Model RTL801Bluetooth Compatible 5 3Color BlackTransmission distance 20m in an accessible environment Transmission rate 3MbpsChip RTL8761BWSupported protocols A2DP HSP AVRCP HID and other protocolsProduct size about 27 14 8 5mm 1 06 0 55 0 33inchPackaging size about 135 105 15mm 5 31 4 13 0 59inchGross weight 28gFeatures 1 Advanced Technology The USB Bluetooth Compatible Adapter uses the Taiwan Realtek RTL8761BW chip which meets the Bluetooth Compatible 5 3 technical specifications and supports dual mode low power transmission fully compatible with Bluetooth Compatible 2 0 2 1 3 0 4 0 5 0 and 5 1 2 Longer Transmission Distance and Stable Speed With a long transmission distance of 10 20m without barriers and a strong signal the adapter supports a 3Mbps transfer rate making it perfect for high speed file audio and data transfer 3 Original Driver Management Software The Realtek driver management software is easy to use and powerful supporting multiple application program extensions providing convenience for users 4 Low Latency and Fast Connection With ultra low latency and intelligent sleep wake up function the adapter conserves energy while resisting interference with a 24 bit CRC check to reduce interference 5 Portable and Widely Compatible The USB 2 0 interface is portable and universal and the small size makes it convenient for travel Also it supports various operating systems and devices including Window