Upgraded version: Built with Bluetooth 5.0 chip HFP / HSP / A2DP / AVRCP. Pair two devices at once to realize a smart life. Built-in microphone. By connecting with a smartphone, you can enjoy high-quality stereo music and calls wirelessly. Smart noise reduction. A connection range of up to 33 feet can guarantee low signal delay. Pen clip design, convenient to carry, you can answer the phone during fitness and training, enjoy the fun of the line | Easy to use: With the user manual, you can play / interrupt music / skip music / receive a call / call the last call number / control the music on the receiver. It has a built-in rechargeable battery, provides 8 hours of playback and talk time, and can be charged in about 1.5 hours. The adapter and bluetooth receiver are connected via a 3.5mm audio cable, and music / navigation / phone exchange can be easily realized by pairing with a mobile phone. | Incredible feature: This mini bluetooth receiver in-vehicle adapter can connect two bluetooth devices at the same time, and the bluetooth receiver has a built-in microphone so you can talk for free while driving. Designed with an independent volume "+/-" button, audio up / down / play / pause can be completely suppressed. 2 go 1 Bluetooth assist adapter support,> 8 hours continuous wireless audio playback time automatically repairs with the last pair of devices | Perfect compatibility: Bluetooth stereo receiver adapter applies to many Bluetooth compatible devices including mobile phones, iPhone, iPod, Pad, Samsung, LG, Huawei, HTC and many other Bluetooth compatible devices. 3.5mm assisted audio plug If you install equipment, speakers, earphones, cars, home stereo, etc., you can immediately have wireless Bluetooth and provide excellent stereo, enjoy wireless | Fast and comfortable service: Risk-free shopping. Lifetime free technical support, unconditional 45 days refund or exchange, 24 months peace of mind warranty, contact us if you have any questions, we will provide you a satisfactory solution!