Portable Mini BT 5.3 Receiver Car Audio Adapter Hands-Free AUX Car Bluetooth Receiver 1.Multiple Uses Not Only for Car: The detachable connector design can solve the problems of headphones, old-fashioned speakers, etc, which are without Bluetooth function to realize the Bluetooth reception 2.One-Click Hands-Free: Connect the Bluetooth receiver to the car AUX interface, then pair the mobile phone with BT receiver to realize hands-free and A2DP 3.Use for Car Vehicle NavigationHands-Free TalkingMusic Entertainment: Say goodbye to the danger of answering the phone while driving with one hand one-click hands-free function, for safe call answering 4.Use for Wired Headphones 10g is As Light As Nothing: Wired headphones can also be transformed into Bluetooth headsets, which are more concise without wires 5.Built-In Bluetooth V5.3 Powerful Chip Escort the Sound Quality: Adopt a professional audio chip, with Bluetooth 5.3 protocol, which makes audio analysis ability stronger, lower delay speed, and more stable signal transmission Specifications: 1.Model: W1 2.Material: ABS 3.Battery capacity: 120mAh 4.Size: 4.6 x 3.2 x 1.5cm 5.Product weight: about 10g 6.Playback time: about 6 hours