Founded AfterShokz 2011 in Shenzhen — bone-conduction headphones (open-ear, sound delivered via temple bone). Targeted runners / swimmers / cyclists who can't use earbuds. Rebranded to Shokz 2021. OpenRun Pro, OpenSwim, OpenComm work-pro line. Major DTC + Amazon presence in NA / EU. Estimated revenue ~$300M+ 2024. Open-ear category effectively their invention; now imitated by Sony / Bose.