1.The device is developed for car using with Wireless MP3 player, equipped with professional high-performance Wireless module and MP3 decoder chip 2.It can transmit and play stereo music from the TF card to the car through the FM radio signal 3.It can transmit music from mobile phone to the car audio through Wireless 4. You can also use this device to complete a phone hands-free system that can communicate freely during your driving 5. The device sends the signal wirelessly, without modifying anything in the car, both as an entertainment music player and as a safety and accessible car kit Product features 1. Please insert this device into the car cigarette lighter and then start automatically; the screen will display the car battery voltage and monitor the car battery at any time when working 2. CVC technology to control noise and storm then to create full-duplex sound quality 3.Support the phones A2DP function, the phone will play music directly when connecting 4.When the device is switched on, the phone can automatically connect to Wireless 5.Support external TF card, can play MP3 / WMA format music files 6.Intelligent charging and high-pass fast charging program output, can be used for car handheld equipment charging lOrange USB port supports QC3.0 protocol: DC3.5-6.5V/3A, 6.5-9V/2A, 9-12V/1.5A Blue USB port supports intelligent output current: 5v/2400MA Wireless Wireless frequency: 2.4GHZ Sensitivity: -42db+/3db 360 Voltage: 5V +/- 0.5 Working current: 75mA (MAX) Standby current: 20Ma (MAX) Effective range: 5M Sensitivity: -92dBm RF output: 4dBm FM frequency lFM: 87.5MHZ-108.0MHZ Effective range: 2M NOTE: 1.Widely compatible -FM radio can use Wirelessdevices such as iPhone, iPad, iPod, tablet, smartphone or MP3, MP4 player, you can transfer music from car audio to car redio via 3.5MM adio line 2.Sound quality-Using the most advanced interference and noise cancellation technology to provide the most perfect sound quality. Please note that due to radio frequency interference and car ground loop noise, any transmitter is almost impossible to produce perfect audio, but is this product one of the best products on the market 3.This product is slightly hot at work or when the car starts to pause/restart, is a normal phenomenon, please rest assured that use. 4.It is prohibited to use in an environment with excessive air humidity, which may cause an electrical fault 5.If you do not use it for a long time, or if your car cigarette lighter can not be powered off after the car is turned off, please unplug the equipment to avoid the power consumption of the car battery 6. Please adjust the frequency to a clean blank channel and adjust the frequency the same, if you encounter noise interference, please replace the new channel, try to avoid the use of local radio channels, so to avoid interference, to obtain high-definition sound quality Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item Please allow 0.1-1cm difference due to manual measurement, thanks Other accessory demos in pictures are not included. Shipping color: black Shipment Quantity: 1