• Exceptionally clear 2-Way Communication
• Includes ETYCOM headset, 4 ft. cord with 3-conductor 2.5mm plug, Assorted eartips, Replacement filter, Filter changing tool, Shirt clip, and Carrying Case
• Highest noise isolation of all headset earphones
• Highest noise rejection of all headset microphones
• For use with mobile phones and cordless phones using 2.5mm plug

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

This product does what it says. It is the clearest earphone I have ever used. THe noise canceling technology is excellent. In the past I couldn't even be walking without wind noise. The ER22c only has issues in a wind of 15 mph or more without the wind screen. I have not tried the wind screen yet but expect that it would work in the wind.

My wife and daughters have had problems finding headsets that work. We all have very different sized ears. This headset works for all of us because of the many interchangeable ear buds.

I prefer a wired headset because Bluetooth takes so much power.

The ER22C also comes with an adapter that plugs into my computer. The headset works very well for speech recognition. I use the Microsoft package that comes with "Office". Saves a lot of time.

For $35, you can't beat it.

I have had Etymotic earphones for years and love them, so it was with great confidence that I ordered this headset. Unfortunately, I quickly discovered three problems:

1. The headset has a 2.5mm jack that does not work with my mobile phone, which has a 3.5mm socket. $10 more and 1-2 weeks longer to get an adaptor.

2. The ear plug supports the relatively small weight of the boom/mic and cord. It feels fine at first, but gets uncomfortable after a while. I discovered this while waiting for my first call with the headset on.

3. The mic is noise cancelling and must be close to your mouth in order to work properly. The boom is too short for me and as a result the noise cancellation cancels out my own voice! By pulling on the boom I got it close enough to my mouth to verify that it actually works, but that is hands-on and uncomfortable and will not work for general use.

Sigh. I am returning the headset.

I used to be on the phone 5+ hours a day, so I was on the search for a great cell phone headset. I had a Palm Treo 650, which had a very sensitive mic (picked up a lot of background noise), and also a poor speaker (so it was hard to hear the other party). I would try to talk in the car with the windows up, but since my car was older and noisier it was near impossible to hear each other with the built-in mic. I used other wired headsets which were cheap and worthless (mic would still pickup a fair bit of background noise, and the speaker was never very clear).

I also tried some bluetooth headsets, but none were that great. The best noise cancellation one was the Jawbone v1 headset, but it had a horrible fit and speaker. I finally tried the Shure QuietBoom QSHB3 wired headset, and I thought I'd found the perfect headset. It blocked out a lot of background noise, to the point where I could ride in the car and not have the other party even realize it. I test drove with the windows down and radio on, and it was still incredibly clearer on both ends than before with the windows up! However, after a few months the QuietBoom started acting up and would work inconsistently.

I finally tried the Ety.com ER22C, and it was even better than the QuietBoom. It has the best noise cancellation mic of any headset I've tried, and with the in-ear style earplug it fits securely and blocks out background noise when I'm trying to hear the other person. It's very lightweight, and has a flexible but sturdy boom for the mic. There's no earhook, but if you wrap the cord up and over the ear it stays in place better than the QuietBoom. This is by far the best headset I've ever used, and now the only other thing I'd consider is the EtyBlu bluetooth headset (that presumably uses the same components), or a Plantronics Voyager 500 modified to use this mic (search for "AX2 Pro" or "Voyager 500 Pro modification").

Horrible

I purchase the ER33C after reading a lot of reviews and all I can say is there are a lot of people that are satisfied with poor performance.

The ER33C is VERY uncomfortable with ALL of the supplied tips. I modified the gray tip and it was sort of comfortable but not great.

The most common complaint I have read is that the mike slips down away from your mouth and you cannot be heard. I found this to be the case and moments after moving the mike up near your mouth it would slip down again. The reason is because of a poor placement of the cord which tugs on the boom pulling it down and could easily be rectified by Etymotic.

I say "near my mouth" because the boom is only about 4 inches long and so the mike is pointing at your cheek not your mouth. This is really stupid design but what do I know!

Even when the mike was directly near my mouth everyone I spoke with said the sound was not good. Not only does the noise canceling feature not work but the mike is too far from your mouth. I am not sure why the boom could not be made 2 inches longer so the mike is directly in front of your mouth but that would help a lot.

Don't waste your money.

I could hear others well, but callers consistently had trouble hearing me. I positioned the microphone in every configuration I could think of, but never did get a good volume on the other end. I'm no longer using this and have moved back to my old headset.