Specification: _x005f_x000D_ Model: BT06A-5.0 _x005f_x000D_ Chipset: RTL8761B _x005f_x000D_ Bluetooth-compatible: 5.0 _x005f_x000D_ LED indication: power on, connecting, standby _x005f_x000D_ System support: Windows 7, Win8.1, Win10, Win11 _x005f_x000D_ Software support: Realtek driver _x005f_x000D_ Frequency range: 2.402-2.48GHZ _x005f_x000D_ Supporting application functions: HFP/HSP (hands-free phone/headset) A2DP/AVRCP (stereo music) HID/HOGP (keyboard and mouse), Android smartphone, etc _x005f_x000D_ Working temperature: -10-50 ℃ _x005f_x000D_ Storage temperature: -20-70 ℃ _x005f_x000D_ Product size: about 19 * 17 * 8mm/0.74 * 0.66 * 0.31 inch _x005f_x000D_ Packaging size: about 135 * 106 * 16mm/5.31 * 4.17 * 0.62inch _x005f_x000D_ Net weight: 3g _x005f_x000D_ Gross weight: 32g _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Note: _x005f_x000D_ Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! _x005f_x000D_ Please allow 1-2cm measuring deviation due to manual measurement. _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Included: _x005f_x000D_ 1 x USB Adapter 1. Wide Compatibility: This USB adapter supports a variety of devices, including Bluetooth-compatible headphones, keyboards, mice, speakers, phones, printers, computers, and gamepads. 2. Multiple Profiles Supported: The USB Bluetooth-compatible adapter supports various profiles, including serial ports, object push, file transfer, local area network access, personal area network, audio gateway, headset HID, keyboard, mouse, HCRP (printer cable replacement), low-power Bluetooth-compatible, PIM synchronization profile, A2DP, AVRCP, and low-power Bluetooth-compatible. 3. Long-range Connectivity: The wireless Bluetooth-compatible receiver supports Class 2 Power Level with a range of up to 10-20 meters and supports Bluetooth-compatible EDR data rates up to 3Mbps. 4. Dual-mode Bluetooth-compatible: The USB adapter supports Bluetooth-compatible 5.0 dual-mode specifications, supporting both classic Bluetooth-compatible and low-power Bluetooth-compatible. It supports USB/UART and supports 7-BR/EDRE ACL links, 1-SCO/eSCO audio links, and 1-BLE slave link or 4-BLE masters.