Translation earbuds are gaining momentum, but actually using them may not be quite the experience you're expecting. Here's what they do and what you can realistically expect.

Translation earbuds work in three main steps: speech recognition, machine translation, and text-to-speech synthesis. Using mics, they pick up the speaker's voice, with high-end models like the Soundcore Liberty 5 Pro using eight microphones and AI to separate voices. Audio is processed on the connected phone, in the cloud, or both—Apple Air Pods Pro runs all processes on the i Phone, while Google Pixel Buds require an internet connection.

During processing, speech recognition turns sound into text, then translates it using NLP and sometimes LLMs like Chat GPT. Finally, a synthetic voice generates audio sent back to your earbuds via Bluetooth. Some models, including Apple Air Pods Pro and Galaxy Buds Pro, can work offline, but others need a steady connection.

Compared to their early days, translation earbuds work much better, but the advertised 95 or 99 percent accuracy is marketing hype. Real-world conditions—unclear speech, slang, background noise—cause delays and inaccuracies. Offline use also limits language pairs, like Timekettle's 14 options.