Bluetooth 5.3 Transmitter Receiver 2-in-1 Hands-free Call AUX Interface LED Display Audio Adapter Features: 【Sending and receiving in one】This Bluetooth adapter has two receiving functions. The receiving mode refers to an audio playback device connected to a speaker, which receives Bluetooth signals and plays music wirelessly; Transmission mode refers to connecting audio output devices, transmitting Bluetooth signals, and playing music through paired wireless headphones and Bluetooth speakers. 【Car Connection】When used in the car, the car audio system instantly changes to Bluetooth audio, starts with the car, automatically reconnects, can listen to audiobooks, high-definition voice navigation, and driving is safer. 【Handsfree Call】 This Bluetooth adapter comes with a built-in microphone for hands-free amplification calls, with clear sound quality and no noise. Hands do not leave the steering wheel, making driving safer. 【Wired to Wireless】This Bluetooth adapter can connect old audio systems, headphones, and computers to achieve wireless stereo music playback, which is convenient and fast. 【Bluetooth 5.3 chip】This Bluetooth adapter uses a high-performance Bluetooth 5.3 chip to ensure stable Bluetooth signal transmission, reject delays and stutters, ensure clear call sound quality, and continuously connect. 【Power Display】This Bluetooth adapter comes with a built-in 250mAh large capacity battery and has a power display function. It can be used for 13 hours in receive mode,6 hours in transmit mode, and 1 hour in charging time. 【Supports One to Two】This Bluetooth adapter supports simultaneous connection of two phones, allowing for music switching and easy listening. Product Description: Product name: Bluetooth adapter Product color: black Product material: aluminum alloy Input voltage: 5V Battery capacity: 250mAh Bluetooth version: V5.3 Working distance:10 meters Charging interface: TYPE-C Battery life:13 hours in receiving mode and 6 hours in transmitting mode Supporting protocols: A2DP/AVRCP/HFP/HSP Charging time: approximately 1 hour SINR:>60DB Distortion:＜0.1% Frequency range: 2400MHz -2483.5MHz Frequency response rate: 20Hz-20KHz Left and right head separation: ＞60DB Effective distance of microphone:0-1M Package size:12.9×9×2.4cm/5.1×3.5×0.9in Package weight:63g/0.14lb Product List: 1 x Bluetooth adapter x instruction manual 1 x charging cable 1 x 3.5mm metal adapter Our Car Accessories are Dedicated to Making Our Customers More Satisfied with Their Use, And We Will Focus on Customer Satisfaction to Improve and Update Our Products to Ensure that Every Customer Has a Good Experience! Our Car Accessories Must be Safe for Our Customers to Use, So We Ensure that Our Products Can be Used Normally and Safely When They are Made, To Ensure that All Customers Can Use the Products Safely. Our Car Accessories are also Very Practical, So that Customers in the Use of Up, Can Feel The Usefulness of the Product Everywhere, And Very Convenient to Use, Easy to Use!