<p><span style="font-size:18px;font-family:arial, helvetica, sans-serif">6.0 Bluetooth dual-mode dual-channel, compatible with Bluetooth 3.0, 4.0, 5.0, 5.1, 5.3 and 5.4 specifications.</span></p><p><span style="font-size:18px;font-family:arial, helvetica, sans-serif">Intelligent low-power chip, RF transceiver, providing lower delay, flexible and powerful Bluetooth application.</span></p><p><span style="font-size:18px;font-family:arial, helvetica, sans-serif">Support Cass2 Power level 20 meters distance (in open environment)</span></p><p><span style="font-size:18px;font-family:arial, helvetica, sans-serif">Support Bluetooth 6.0 dual-mode specification (LMP 14.5X true Bluetooth 6.0 standard)</span></p><p><span style="font-size:18px;font-family:arial, helvetica, sans-serif">Support USB2.0/3.0 interface.</span></p><p><span style="font-size:18px;font-family:arial, helvetica, sans-serif">Support multiple devices to connect at the same time (up to 5 devices can be connected)</span></p><p><span style="font-size:18px;font-family:arial, helvetica, sans-serif">Working temperature -20 to 70℃</span></p><p><span style="font-size:18px;font-family:arial, helvetica, sans-serif">Operating system support: Windows 8.1/10/11 (driver-free, plug and play), Windows 7 can be installed with drivers.</span></p><p><span style="font-size:18px;font-family:arial, helvetica, sans-serif">Support protocols: HFP/HSP (hands-free phone/headset) A2DP/ AVRCP (stereo music) HID/HOGP (keyboard and mouse) /AAC. Android smart phone, etc.</span></p>