【Versatile Connectivity】This Bluetooth-compatible 5.4 adapter supports both transmitting and receiving, allowing connection to two phones or two Bluetooth-compatible headphones simultaneously. 【Wide Compatibility】Features a 3.5mm AUX interface, making it universally compatible with various devices for hands-free calling and audio streaming in your car. 【Extended Range】Offers a Bluetooth-compatible transmission and reception range of up to 10 meters, providing flexibility in device placement. 【Long-Lasting Battery】Equipped with a 150mAh battery, it provides approximately 8 hours of working time on a single charge. 【Compact Design】Weighing only 54g, this adapter is lightweight and portable, perfect for use in vehicles or on-the-go. Specifications: Bluetooth-compatible Version: 5.4 Frequency Range: 2.4GHz-2.48GHz Transmission Range: ≤10 meters Reception Range: ≤10 meters Charging Voltage: DC 5V Battery Capacity: 150mAh Working Time: Approximately 8 hours Weight: 54g