Bluetooth Vibrating Bracelet. While most phones sold today come with vibrating alert, some time we just can’t feel it while in the crowd. The LM Technologies LM959 Bluetooth vibrating bracelet is a revolutionary product that gives the user discreet and increased awareness of an incoming mobile phone call by vibrating.The LM959 is styled in a sporty design with a user friendly interface that can be connected and working in minutes. In addition to vibrating on phone calls it's also a theft prevention device!, the Bluetooth wristband alerts you when you have wandered more than 15 feet away from your phone.