Monoprice High Performance Bike Mountable Bluetooth Speaker (110618) You want to take your tunes with you while you ride your bike, but you don't want to risk your safety by wearing earphones What you need is this Bike Mountable Bluetooth Speaker from Monoprice This speaker connects wirelessly to your phone or mp3 player with Bluetooth It features a built-in microphone and dedicated call buttons, allowing this to serve as a hands-free communications device