IMPACT SC 660 - Professional Double-Sided Headset, Optimized for Desk Phones and Microsoft Teams Certified

Happy with it. Works good.

I am very happy with this headset. I wear it 10 hrs pr day, be it while in the office with a 2.5mm plug for my cordless phone, or I have it plugged into my Iphone 6+. I listen to audio books or something on Youtube, and can easily transition into taking incoming calls. I wear it while doing all kinds of activities, and have dropped the phone multiple times where it has yanked on the cord, and the headset still works, despite having bent the jack somewhat. I am thrilled to have found this headset, after my 10 year old Platronics headset stopped working, and their quality appears to have been slipping. It is hard to find a dual sided corded headsets. I don't want to have another thing to charge, and sync up, so much so that I am not getting the new Iphone when I need another phone as they have removed their jack. I guess I am old fashioned as I like to keep it simple is not the quality that it used to be, and this Sennheiser appears to be holding up. Another benefit to dual sided headphones is that they work as ear warmers in the winter months :)

I have had this headset for 5 years and counting. I have no complaints. I have used it 4 times a week for 10 hours a day every week for the last 5 years.

It's pretty comfortable and the sound quality works well, both in receiving and the microphone. However, a couple of years after I started using it, the wire started flaking. 3 years in, chunks started falling off. I repaired the wire using moldable glue. After 5 years of use, I've almost rebuilt the entire wire using Sugru. The remaining parts are now flaking and falling off on me, and I'm looking at having the rebuild the remaining sections of the wire. It's unfortunate that such an expensive and high end headset would utilize such cheap plastic for the wire.

I work straight commission in a sales environment and for the past few months this headset has really enabled me to relax into my call and focus on closing the deal. They are comfortable, they feel the Mercedes of headsets and they have eliminated the hearing problems I was having with the cheap set that came with the job.