Description&Preview shipping&policy Description: Product features: Supports connecting Multiple Btdevices adopt dual-mode transmission that truly conforms to Bt5.0 technical standard. transmission distance: 100m, 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 Bt 2.0, Bt2.1 and Bt 3.0 specifications. USB2. 0 interface is more universal, super mini body and portable. supporting system: win8.1/win10/win11 ( drive free Package 1*receiver Preview: Thank you for your purchase Problems? You can follow below process to contact us. There is a time zone difference,but we will do our best to quickly response to your questions: Shipping We will arrange shipping for you within 24 Hours after payment cleared except the holidays. We always send the item to the address you give us on Payoneer to ensure the security of the item. If you have changed your address, or want us to ship to another address, please change to the new address when you pay us with Payoneer, otherwise we will not be responsible if the package is lost.