Yealink has a new series of DECT headsets, with a LCD screen control interface, great microphone noise processing technology, and overall an amazing product.
They are designed for mobile+softphone. https://www.yealink.com/product/headset-wh66
Unfortunately, Ringcentral only supports Jabra/Poly headsets. I much prefer this product over what Jabra / Poly are producing. Given Ringcentral already supports many Yealink products, I would encourage you to include this headset, it's a winner.