The information below is per-pack only

Headset designed for landline cordless phones and corded phones equipped with a 3/32 in. (2.5 mm) diameter plug; NOT COMPATIBLE with 3.5mm headphone jacks in cell phones and laptops (adapter required, sold separately)

Adjustable, flexible noise-canceling boom microphone provides custom fit and optimal voice clarity

Convenient controls: volume control with integrated mute button onto the cord

Lightweight and comfortable fit: foldable; hands-free usage; reversible headset; cord clip included

Connection: 2.5mm Auxiliary plug; separate adapter required for compatibility with 3.5mm headphone jacks on electronics