Bluetooth 4.2 Music Speaker: This little Bluetooth speaker has superb volume levels for a rich stereo sound in crisp high definition . Supplies studio quality at indoor & outdoor with a deep bass. New powerful sub woofer & loud clear sound from a small circle.Also it can be use as MP3 Player with TF Card ,U disk or Aux inputThree Ways to Play Music:TF Card,AUX Input,Bluetooth . Power:built-in 1800mA rechargeable battery for up to 8 hours playtime. LED Mirror Alarm Clock:12/24 hours switch,two groups of alarm,snooze function. You can set different alarm songs from TF card,not boring for traditional alarm rings.Indoor Temperature degree Celsius,Not Have Fahrenheit(If you mind ,not order it.).Three Levels of Brightness(High-Medium-Low). USB Charging Port: With built-in 1800mAH rechargeable lithium battery it takes 3 hours for full charging.