Yes, the MM450x is the newer version. Doesn't get great reviews though and looks pricey for something that's been out for nearly 4 years.
The Plantronics Sense are a possible https://www.amazon.co.uk/Plantronics-Back-Sense-Stereo-Headphone/dp/B012TKIG6S/ but they're lacking noise cancellation and I'm not sure how good the isolation is. Can't spot anywhere to try them though so I'm undecided.
@aggi started
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Yes, the MM450x is the newer version. Doesn't get great reviews though and looks pricey for something that's been out for nearly 4 years.
The Plantronics Sense are a possible https://www.amazon.co.uk/Plantronics-Back-Sense-Stereo-Headphone/dp/B012TKIG6S/ but they're lacking noise cancellation and I'm not sure how good the isolation is. Can't spot anywhere to try them though so I'm undecided.