Ultra-lightweight, behind-the-ear fit provides unbeatable comfort. Multi-pivot design enables microphone boom to adjust for left and right ear with precision microphone placement. Noise-canceling microphone optimized voice clarity as it blocks background noise. In-line answer/end and mute button. Jabra Pivot Gels, in standard and small sizes for added comfort, boost sound directly in your ear for outstanding reception. Compatible with most phones with 2.5mm jack.