Hum-A-Long on your Bike with Bike Tunes on a Bluetooth Speaker with a bike mount. Sync your cell phone to your Bluetooth speaker and play music while you ride or exercise on your bike. If you need to answer an incoming call, you can take the call and speak on the built in mic on the speaker giving you hands-free talking. The speaker also has built in volume control and FWD/RWD or STOP buttons. Made from sturdy ABS plastic, it is Water Resistant as well. Enjoy your music while keeping your ears open for your surrounding making it safe way to ride a bike instead of wearing a headset. Bluetooth 4.0 Speaker Multi Functions Botton on the Speaker. Built-in Mic for Hands-Free talk. Compatible with any Bluetooth enabled Smart Phone or Tablet. Easy Bike mounts no tools required. Built-in rechargeable battery can last for 6 hours of continues play and six days of standby.