Add the ER22C Cell-Phone headset to your compatible cellular-phone and experience a new level of high-performance 2-way communication - with absolute privacy - where ever you go. Etymotic Research combined its noise-isolating earphone and noise-rejecting directional microphone technologies to produce the most technically advanced headset of its kind. Etymotic Research combined its noise-isolating earphone and noise-rejecting directional microphone technologies to produce the most technically advanced headset of its kind. The insert earphone optimizes sound quality and noise isolation, and the close-talking directional microphone allows you to speak softly for greater privacy. Clear two-way conversation is possible in very high levels of background noise. With a standard 2.5mm plug, it is designed to work on most cellular phones that accept a headset and on many home cordless telephones that also have a headset jack. Compatible with most Motorola mobile phones and with most other mobile phones requiring a universal, 3-conductor 2.5mm plug / Adapters for Nokia mobile phones and compatible Handspring Treo and Palm Tungsten W PDA/Phone models available from Etymotic Research |