Features: 1. You can connect two mobile phones with our product. 2. Can be used as a music player to enjoy HD music. 3. Can be used as voice assistant, low power alarm and indicator light. 4. Stereo audio output with microphone. 5. Excellent quality and durability. Specifications: Name: Wireless Bluetooth5.0 Receiver Weight: 10g Size: Approx. 5.2*2.8*0.8cm/2.05*1.1*0.31in Bluetooth version: V5.0 Output power: Class2 type Bluetooth Range: ≤10M Bluetooth protocol: HFP HSP A2DP AVRCP Working voltage: DC 3.0-4.2 V Working current: ≤19Ma Working time: about 6H Built-in lithium battery: 110mAH Charging voltage: DC+5V Charging time: about 2H Functions: Multi-function button: product switch: play / pause Next / up volume Previous/lower volume Pairing button Indicator light USB charging Audio output/input Fiber input Fiber output Receiver/transmitter Package List: 1 * Bluetooth Receiver 1 * User manual 2 * Audio Cable 1 * Data Cable 1 * Adapter 1、You can connect two mobile phones with our product. 2、Can be used as a music player to enjoy HD music. 3、Can be used as voice assistant, low power alarm and indicator light. 4、Stereo audio output with microphone. 5、Excellent quality and durability.