Features 1.Dual Functionality: Support for both signal receiving and transmitting, allowing for seamless switching between modes. Suitable for multiple devices, providing versatility in usage. 2.Bluetooth 5.0: Built in advanced Bluetooth 5.0 technology ensures stable and fast signal transmission, eliminating delays and lags, and delivering high grade music experience. 3.Convenient Operation: One button switch and user friendly interface make it easy to operate. Clear display screen shows real time connection information, ensuring quick and fast use. 4.Strong Performance: Supports memory card music playback and acts as a card reader. Simply insert a card to automatically recognize and play sound files, freeing you from the need to carry a smartphone. 5.Long Lasting: Built in 250mAh lithium battery provides up to 6 hours of continuous usage. Enjoy extended periods of use without the need for frequent recharging. Convenient and reliable. Specification Item Type:BluetoothReceiverTransmitterMaterial: ABSBluetooth Solution: 5.0Frequency: 2.4GHz-2.48GHzBluetooth Transmitting Distance 10 metersBluetooth Receiving Distance 10 metersBattery Type: Lithium batteryBattery Capacity: 250mAh (inclusive)Working Hours: about 6 hoursBluetooth Reception Function: Connect 1 mobile phoneBluetooth Transmission Function: Connect 1 pair of Bluetooth headsetMemory Card:Maximum support 32G (excluding) Package List 1 x BluetoothReceiverTransmitter1 x User Manual1 x Adapter1 x Data Cable