Now you can offer your guests the convenience and simplicity of listening to their smartphone music wirelessly without having to pair or connect a device. SoundFlow Wireless Audio is as simple as pressing play on their smartphone and placing it on the soundmat. It's just that easy and it works with any smartphone. Key Features: With "no worry" battery backup, the time setting will be saved and the alarm will sound even when power is lost. Simple 1,2, 3 instructions guide users through alarm setting and music playback The anti-theft door on bottom panel protects batteries. Time settings and max volume control are hidden on bottom and can't be changed by guests Charges a smartphone or a tablet with, side-panel USB port Single day alarm, plus built-in calendar for automatic DST adjustment