Ari ultra-portable five-watt speaker! Measuring 4.26" x 2.32" x 1.07", the compact Bluetooth speaker can be paired to phones or tablets for a surprisingly large, quality sound. It features a straightforward on/off switch, built-in microphone/speaker phone and an audio-in port. There are buttons for music control (play/pause, skip, previous) and a passive radiator for bass boost. The outer edge has a soft gray finish and two silicone feet that provide a non-slip scratch resistant base.