In the spring of 2021, Bowers & Wilkins unveiled their first fully wireless earphones. In reality, at the time, it introduced two models: the Pi7 and the Pi5. Today, Bowers & Wilkins announced revised versions for both, which will bear the S2 branding, which the firm generally employs for retooled but not fully new items. While the Pi7 S2 and Pi5 S2 have not been completely redesigned, both have received significant enhancements.