SD/USB Player with FM Radio 1,Calendar:from 1st, Jan 2000-31st,Dec 2099 2. Temperature:from -9.9°C to 50°C(14°F to 122°F),temperature switch between °C and °F. 3.Alarm: BiBi sound, mp3 music and timed FM radio snooze time: 5 minute 4.MP3 in different playing pattern and equalizer 5.Built-in SD C card slot, card memory is 32MB-4GB 6.Built-in USB2.0 socket for USB card reader or USB flash drive 7.FM frequency: 87.5-108.0MHz. It can support FM radio sleep function, the longest sleep time is 3 hours, default sleep time is 30 minutes. 8. 3.5mm AUX jack 9. LED backlight 10. Volume control: level 1-16, default is level 6 11. speaker: 2W*2, 4ohm 12. power supply:AC:100-240V DC:5V 500MA