The moisture meter can quickly measure the moisture content of the grain. 1. Simply connect the cassette adapter to the CD player in your car , and then the cassette adapter will start playing music on your phone. 2. The built - in microphone can support ringing function without delay in making and receiving calls. 3. The cassette adapter with USB charging LED indicator is convenient for charging. 4. Control button box adapter can be easily controlled manually, easy to operate. 5. Tape converter with bluetooth 5.0 technology allows you to conveniently play music on your smartphone via bluetooth connection. . USB CASSETTE BLUETOOTH CONVERTER CASSETTE MAGNET Specification: Item Type: Car Bluetooth Cassette Adapter Material: ABS plastic Color : Black Product Size: approx . 10x6.4x0.9 cm / 3.9x2.5x0.4 inch (there was an error due to manual measurement) Bluetooth Receiving/Connecting: Support Audio format: AAC, MP3, for SBC, stereo Bluetooth Support: EDR Indicator light : blue , red Transmission distance: approx . 10m / 32.8ft Built - in battery: 140 mAh lithium battery Charging Current: 80mA Operating Voltage: 3.3-4.2V Charging Input Voltage: 4.5V-5.3V Output Mode : Bluetooth . USB CASSETTE BLUETOOTH CONVERTER CASSETTE MAGNET List of packages: 1 x Cassette Adapter 1 x Charging Cable 1 x Manual Simply connect the cassette adapter to the CD player in your car . Then the cassette adapter will start playing music on your phone. . USB CASSETTE BLUETOOTH CONVERTER CASSETTE MAGNET