Timekettle has introduced its W4 Pro earbuds at CES 2025, featuring real-time two-way translation for phone and video calls in 40 languages. The earbuds automatically translate conversations without user input, though there is a latency of about three to five seconds. The device maintains voice quality while providing audible translated speech. Enhanced by the new Babel OS, it allows customizable lexicons and emotional tonality in translations. The W4 Pro, priced at $449, also supports face-to-face translations by sharing earbuds. Sales begin this Sunday.