BLUE LED SCREEN:Show the time HANDS-FREE CALLS AND SELF-TIMER: Wear this watch when driving, and easily enjoy the hand-free calls. In addition, this could be used as a self-timer, use remote control to take a photo. ULTRA PORTABLE Under 4 ounces.MUSIC PLAYER AND RADIO: You could listen to the music in your phone with this watch, or you could put a micro SD card into it, and get rid of cell phone. Very light and portable when sporting. Have FM radio function. You could enjoy real time information anywhere you want. Anit-lost function:in bluetooth mode,if device disconnects automatically with matched device due to over distance.device will remind it will disconnect and alarm.