Item Type: Car Bluetooth Cassette Adapter <br>Material: ABS Plastic <br>Colour: Black <br>Product Size: Approx. 10x6.4x0.9cm / 3.9x2.5x0.4in(there is an error due to manual measurement) <br>Bluetooth Answer/Call: support <br>Audio Format: AAC, MP3, for SBC, stereo <br>Bluetooth Support: 5.0 + EDR <br>Indicator Light: blue, red <br>Transmission Distance: Approx. 10m / 32.8ft <br>Built-in Battery: 140 mAh lithium battery <br>Charging Current: 80mA <br>Working Voltage: 3.3-4.2V <br>Charging Input Voltage: 4.5 V- 5.3V <br>Output Mode: Bluetooth1、Just connect the cassette adapter to the CD player in the car, and then the cassette adapter will start playing music on your phone. <br>2、The built?in microphone can support the call function without delay in making and receiving calls. <br>3、Cassette adapter with USB charging LED indicator is convenient for charging. <br>4、The control button box adaptor can be easily controlled manually, easy to operate. <br>5、Tape converter with bluetooth 5.0 technology can conveniently play music on a smart phone via a bluetooth connection.<p>1 x Cassette Adapter 1 x Charging Cable 1 x Manual</p>