Excellent receive-side audio quality. A greater receive-side frequency response improves listening intelligibility. -Comfortable, lightweight design. Adjustable headband, foam ear cushions and comfort T-Pad create a stable, comfortable fit. -Bendable click-stop microphone boom. Stays in position for clearer voice transmission. -Small, light, flexible cable. Designed for lightweight durability, with a single-cable design for binaural models. -Quick call feature. Headband twists out of the way for convenient quick call pick up. -Monaural lets you hear the conversation and what's going on around you