The Timekettle W4 AI Interpreter Earbuds Debut at IFA 2025 with Bone-Voiceprint Sensor Capture and LLM-Powered Context-Aware Translation To Distinguish Phonetically Similar Phrases
Seamless, real-time, cross-language communication with 98% accuracy and a near-zero (0.2 sec) lag time.
Berlin, Sept. 5, 2025 — Today at IFA 2025, Timekettle, a global leader in AI-powered translation, launched the W4 AI Interpreter Earbuds, the first consumer in-ear earbuds to combine bone-voiceprint sensor voice capture with LLM-powered, context-aware translation. Designed for seamless, real-time multilingual conversations, the W4 integrates dual-voice pickup, advanced noise filtering and context-aware AI that resolves confusing homophones, delivering up to 98% translation accuracy and a near-zero (0.2 second) lag.
Priced at $349 / €349 and available from September 5, 2025, the W4 AI Interpreter Earbuds will be demonstrated throughout IFA 2025 at Timekettle’s booth (H3.2-143).
Compact design built for everyday use
Following the W4 Pro over‑the‑ear model for professional users, the W4 bone‑conducted in‑ear earbuds are optimized for casual and travel use. Smaller and highly portable, the W4 is offered in Navy Blue and Sandy Gold and is designed to be comfortable for extended wear while positioning the sound-pickup microphone precisely toward the mouth for optimal voice capture.
Bone-voiceprint sensors and privacy
The W4 uses bone-voiceprint sensors to detect vibrations directly from the wearer’s bones, dramatically reducing background noise and improving speech recognition in busy environments like conferences, airports and city streets. The bone-voiceprint approach also prevents sound leakage for more discreet, private conversations while improving translation efficiency and accuracy.
Leal Tian, Founder and CEO of Timekettle, said: “The W4 is a game-changer for anyone engaging in global conversations. By leveraging our proprietary HybridComm™ AI technology that forms the backbone of our Babel OS software, we’ve created a device that not only translates in real time but also feels natural and effortless to use—just like having an interpreter right by your side.”
Key features
- Ultra-accurate voice recognition — Bone-conduction technology eliminates noise interference for precise voice pickup and translation.
- Smooth, natural one-on-one conversation — Auto-switching between listening and speaking modes enables naturally flowing exchanges.
- Seamless real-time translation — Supports 42 languages and 95 accents, enabling coverage across most global regions.
- Effortless one-flip sharing — Open the case to instantly share an earbud for two-way translation.
- All-day battery life — Up to 4 hours continuous translation (8 hours music playback) standalone; with the charging case the device offers up to 10 hours translation / 18 hours music playback.
- Music & language fusion — High-quality audio playback in addition to translation functionality.
Powered by Babel OS
The W4 runs Babel OS 2.0, Timekettle’s advanced AI translation platform. Babel OS leverages real-time language prediction, contextual learning and custom lexicons to deliver near-human speech translation with 98% accuracy. Integrated LLM models enable context-aware disambiguation of homophones (words that sound similar but have different meanings). Timekettle also plans to introduce AI voice‑cloning features in 2026 to further personalize translations.
Product portfolio
The W4 complements Timekettle’s existing lineup — including the W4 Pro over‑the‑ear interpreter, WT2 Edge / W3 earbuds, X1 Interpreter Hub and the T1 and T1 Mini handheld translators — strengthening the company’s position in AI-powered multilingual communication.
Availability
The Timekettle W4 AI Interpreter Earbuds with Bone-voiceprint Sensor Voice Capture will be available for purchase starting September 5, 2025 via Timekettle’s official website and Amazon.
About Timekettle
Founded in 2016, Timekettle develops consumer and professional devices that enable cross-language communication. With award-winning products and a global user base of over one million, the company continues to innovate in AI translation technology to make universal communication more accessible.
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