Model No.:A001U The main functions: 1)Rings can be personalized 2)The MP3 music playing can set as the alarm ring 3)Can also define the music ring on PC and save it on the Bell file of the SD card 4)It can play MP3 music from usb flash disk 5)It can play a different ring for the alarm time you set each day 6)MP3 player with previous key, next key, Play key, vol+ key, vol- key and set key 7)Provided with calendar, alarm clock and snooze function 8)The LCD displays time, day, date, alarm clock icon and temperature, 9)Speakers are provided with D class amplifier, output power of 1W x 2, stereo 2.0 10)Compatible with SD card write and read,usb flash disk write and read 11)Thermometer function Technical specifications: Three methods of power supply: 4 x AAA batteries, USB cable and AC adapter USB 2.0 transfer MP3 player work current: