Klein Tools’ Wireless Bluetooth® Speaker With Magnetic Strap Offers Great Sound Plus More Mounting Options. The Flexible Strap Can Be Used On Conduit, Backpacks, Cooler Handles, Belt Loops... Wherever You Want to Go. A Magnet Is Smartly Embedded In The Strap Allowing You to Attach It to Any Ferrous Surface. This Speaker Provides High-Quality, Crisp Treble and Bold Bass Via A Wireless Bluetooth® Connection or Wired Auxiliary Input. With Great Sound, The Hands-Free Speakerphone, and Superior Mounting Options