Retrak Essentials Water Resistant Bluetooth Speaker with Built-in Mic is perfect for listening to your favorite playlist. Its portable design makes the speaker ideal to use in the shower, pool, sports, and more. Speaker has a large suction cup sticks to almost any smooth surface and a built-in microphone for hands-free calling and comes with a retractable micro USB charger cable. The speaker is approximately 3.25" x 2" in size and comes packaged in a 7.25" x 4" x 3" box.