The car kit integrates a variety of features to meet your most important needs, enjoy your favorite music, quickly dial a speakerphone, and quickly charge your mobile device. It is a good companion for the driver and worth buying. Features: High-definition large screen, Blu-ray L CD is clearly displayed, and song information is displayed synchronously. External TF card / U disk / AUX interface, the car radio FM and MP3 channel are adjusted to play, play U disk / TF card song. Connected to the car to liberate the hands, noise reduction calls are safe and stable, enabling hands-free calling, navigation, and listening to music. Break-point memory playback, memory frequency, track, after the vehicle is powered off, automatically play the song before power off. Internal and external protection double insurance, built-in over-voltage protection, over-current protection, short-circuit protection, overheat protection and other technologies, external ABS + PC anti-fall shell is fully flame retardant. The smart charging chip automatically recognizes the device and can charge devices such as mobile phones and tablets. Compatible with most devices on the market, Bluetooth delivers high speed and stability. Specification: Rated voltage: 12-24V Limit voltage: 9V-28V Output voltage: DC/5V/2.1A Bluetooth version: Bluetooth V3.0+EDR Frequency: 87.5-108.0MHz Temperature: -20-50 degrees Bluetooth distance: 15m Working current: 42mA Standby current: 20mA Mike distance: 0-1M Sensitivity: -85dBm File format: MP3 WAV FLAC WMA SBC APE Product material: ABS + Metal Product size: 15 * 8 * 4cm/6.0 * 3.1 * 1.6in Product weight: 143g gross weight; 75g net weight Conversion efficiency: 85% Package list: 1 * Smart Bluetooth MP3 Car Charger 1 * 3.5mm Audio Cable 1 * English Manual Note: The measurement allowed error is +/- 1-3cm.