Features 1、Built-in Bluetooth + Microphone 2、Support hands-free calls. 3、Support advanced audio transmission mode. 4、Support the clock indicating while power is off. 5、Premium digital stereo FM radio Specifications: Features: Built-in Bluetooth + Microphone Support hands-free calls. Support advanced audio transmission mode. Support the clock indicating while power is off. Premium digital stereo FM radio Support three-band radio store FM1-FM2-FM3, and can preset 18 radio stations. (Radio frequency: 87.5-108MHz) Support USB/SD/MMC card reader Support audio: MP3/WMA/WAV formats and so on. Support folder play function Support breakpoint memory. Support remote control. Rotary electronic volume control MP3 play supports pause /preview/repeat/random play and 10 tracks up/down selections. Electronic type bass/treble/left and right balance/front and back balance volume control Multiple EQ scenario mode choice: jazz, rock, pop, classical, etc. Support mute and equal loudness (LUOD) control. Front AUX audio input hole and rear terminal L / R audio RCA output hole. 4 track high-power output (4 high-power loudspeakers) Work Voltage: DC 12V HOW TO SET TIME? 1. change hour-minute a. short press (one second) CLK button ,Screen will show hours and minutes b. long press CLK button till hours flash then you can rotate the voice button to adjust hours c. short press (one second) CLK button ,minutes will flash then you can change minutes , finally press CLK to confirm and exit 2. change year-month-day a. press CLK button twice to enter year-month-day screen b. long press CLK button till year flash then rotate the voice button to adjust time c.short press CLK button ,month will flash then rotate the voice button to change the month d. short press CLK button ,day will flash then rotate the voice button to change the day HOW TO RECEIVE FM? 1. plug an available antenna into Bluetooth Car Stereo player 2. ensure signal is good. 3. press AMS to search FM radio. Package included: 1 x Bluetooth Car Stereo player 1 x Remote control 1 x User manual 1 x Wire Package List