Timekettle W4 Plus AI translator earbuds - translation headphones, 54 languages

Timekettle W4 Plus AI translating earbuds for conversations, calls and videos in 54 languages. Bone conduction voice pickup, Bluetooth 5.3, up to 3 + 12 h. Imagine talking to a person in a foreign language and not having to look for the right words or open a classic dictionary. Timekettle W4 Plus brings intelligent AI translation directly to wireless translation headphones and enables real-time communication.

It supports up to 54 languages and 108 accents, so it can handle a variety of common and less common language combinations. Thanks to Babel OS 3.0 technology, translation is designed to work better with context and the natural flow of the conversation. You can use the headphones not only for translation, but also for making phone calls, listening to content or on everyday trips. The Timekettle W4 Plus AI translator combines modern headphones with a practical tool for communicating in foreign languages.

Compared to the original Timekettle W4 model, the W4 Plus translates calls between two phones and audio from videos (with the W4 only on iOS with a subscription) and also has AI specialized translation, conversation memory and live conversation summary. The voice is captured by bone conduction with a new VoiceFocus algorithm, which, according to the manufacturer, captures quieter speech 32 to 47% better than the W4. On a single charge, the W4 Plus translates for up to 3 hours (the W4 for up to 4 hours), and both models play music for up to 6 hours. You can find a detailed comparison of the models in the table below.

Timekettle W4 Plus translating earbuds for listening and calls

The Timekettle W4 Plus is not just a translator. Thanks to the wireless connection via Bluetooth 5.3, you can also use them as classic TWS headphones for everyday listening and making calls. Voice call translation lets you use them even when communicating remotely.

Translation headphones with up to 12 hours of battery life

The W4 Plus earbuds are designed as compact wireless headphones that you can carry with you all day long. Each earbud weighs approximately 5.7 g, so it doesn't add unnecessary weight to your ear when worn. They offer up to 3 hours of continuous translation on a single charge, while the charging case allows for a total battery life of up to 12 hours. Charging is via a modern USB-C connector and the headphones come with a charging case and the necessary accessories. The package also includes a USB-C cable, replacement ear tips, ear hooks and a user manual. Thanks to this, your translation headphones are ready for travel, work and everyday communication.

AI translator earbuds with four translation modes

One of the main advantages of the W4 Plus is the ability to use four different translation modes depending on what you need. The 1-on-1 mode is designed for two-way communication between two people. The listen and play mode is suitable, for example, for listening to foreign-language content. Voice call translation extends the use of the headphones to telephone communication in another language. There is also multimedia translation, which is practical when watching or listening to foreign language content. Thanks to the different modes, the headphones can adapt not only to face-to-face conversations, but also to telephone calls or multimedia.

AI translator with specialized translation, memory and live summary

W4 Plus uses advanced AI features that help translate a conversation based on its meaning and context. The AI Specialized Translation feature is designed to more accurately understand specific expressions and technical terminology. AI Conversation Memory can also help with longer conversations, as it works with the previous context of the conversation. Thanks to this, each sentence is not treated in complete isolation from what was said before. Another practical feature is AI Live Summary, which can create an overview of important information from a longer conversation or meeting. It is more than just a language translator - the W4 Plus also uses AI to better process the communication itself.

In ear translator with bone conduction for noisy environments

To ensure the most accurate translation, it is important to first capture the spoken word correctly. The W4 Plus therefore combines bone conduction voice capture with a pair of microphones and VoiceFocus technology. This solution helps separate the user's voice from ambient noise and provide higher-quality input for subsequent translation. You will especially appreciate the advantage in places where there is not complete silence - for example, on the street, at the airport, in a restaurant or while traveling. The headphones also use 12 mm speakers, which ensure sound playback directly into the ears. The combination of high-quality capture and voice processing creates the basis for smoother AI translation in real time.

Real time translator for foreign-language videos

Multimedia mode expands your options when watching videos or listening to content in a foreign language. This means you can use the headphones while traveling or in your daily life without needing a separate device for each activity. In addition, thanks to OTA updates, the device's software capabilities can be continuously improved.

Translating earbuds for 1-on-1 conversations while traveling

When on vacation, on a business trip, or exploring a new country, language barriers can be one of the biggest complications. The Timekettle W4 Plus translation headphones will help you communicate, for example, when ordering, finding accommodation, getting directions, or just having a casual conversation with locals.

The 1-on-1 mode is designed for two-person conversations, with each person using one earbud. This allows for a more natural translation experience without having to constantly hand over the phone. The W4 Plus is also suitable for travelers who want to have an AI translator at hand without having to carry a separate translation device. Simply connect them to your phone and use the Timekettle app to suit your situation. You can find other models among in-ear translators.

Languages: Albanian, Arabic, Azerbaijani, Bengali, Bulgarian, Burmese, Cantonese, Catalan, Chinese, Croatian, Czech, Danish, Dutch, English, Filipino, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Icelandic, Indonesian, Italian, Japanese, Kazakh, Khmer, Korean, Lao, Latvian, Lithuanian, Malay, Mongolian, Norwegian, Persian, Polish, Portuguese, Romanian, Russian, Serbian, Slovak, Slovenian, Spanish, Swahili, Swedish, Tamil, Telugu, Thai, Turkish, Ukrainian, Urdu, Uzbek, Vietnamese.

Accents: Arabic (Egypt, Algeria, Tunisia, Morocco, Saudi Arabia, Oman, United Arab Emirates, Qatar, Bahrain, Iraq, Jordan, Kuwait, Lebanon, Palestine, Israel), Chinese (Simplified, Traditional, Cantonese), English (United Kingdom, Ireland, United States, Canada, Australia, New Zealand, India, Philippines, South Africa, Kenya, Tanzania, Nigeria, Ghana, Singapore), French (France, Canada), Portuguese (Portugal, Brazil), Spanish (Spain, United States, Mexico, Honduras, Nicaragua, Panama, Costa Rica, Argentina, Chile, Bolivia, Colombia, Dominican Republic, Ecuador, Guatemala, Peru, Puerto Rico, Paraguay, Uruguay, Venezuela, El Salvador), Tamil (India, Singapore, Sri Lanka, Malaysia), Urdu (Pakistan, India), Swahili (Kenya, Tanzania).

Timekettle WT2 Edge, WT2 Plus, W3, W4, W4 Pro and W4 Plus compared

Function / feature	W4 Plus	W4	W4 Pro	WT2 Edge / Plus / W3
2-way simultaneous interpretation	✓	✓	✓	✓
Voice call	✓	iOS only, with subscription	✓	✕
Playing music	✓	✓	✓	✕
Making phone calls	✓	✓	✓	✕
Media translation	✓	iOS only, with subscription	✓	✕
Translation time/single charge	within 3 hours	within 4 hours	up to 6 hours	within 3 hours
Music playback / single charge	up to 6 hours	up to 6 hours	until 12 o'clock	✕
Ambient noise suppression	✓	✓	✓	✓
Microphones	Double	Double	Triple	Double
Launching on the market	2026	2025	2024	2021

FAQ - Frequently Asked Questions

How many languages do the Timekettle W4 Plus earbuds support?

They support 54 languages, for example Chinese, French, German, Spanish and Portuguese.

Do the W4 Plus translator earbuds work offline?

Yes, for select languages and modes. There are 13 offline language packs available that must be downloaded in advance.

Is phone call translation free?

According to the manufacturer, call translation requires an active plan in the Timekettle app.

What is the difference between the Timekettle W4 Plus and W4?

The W4 Plus translates phone-to-phone calls and audio from videos (W4 only on iOS with subscription) and also has AI specialized translation, conversation memory and live summary. The original W4 translates for up to 4 hours on a single charge (W4 Plus for up to 3 hours), and both play music for up to 6 hours.

What is the difference between the Timekettle W4 Plus and W4 Pro?

The W4 Pro translates for up to 6 hours on a single charge, has a triple microphone, and an open design outside the ear canal. The W4 Plus is a newer model from 2026, translates for up to 3 hours, and also offers AI-powered specialized translation, conversation memory, and live summaries.

Do the translator earbuds work with iPhone and Android?

Yes, with iOS 14 and later and Android 10 and later.

Technical specifications

Basic information

Model: Timekettle W4 Plus
Technology: TWS
Operating system: Babel OS 3.0
Real-time translation: Yes
Supported languages: 54
Supported accents: 108

Translation functions

Two-person conversation mode: Yes
Translation while listening: Yes
Voice call translation: Yes
Multimedia content translation: Yes
Translation of technical and specific terminology using AI: Yes
Remembering conversation context: Yes
Automatic creation of conversation summary: Yes
Offline translation: Yes, for selected languages and supported modes

Sound and voice capture

Speaker size: 12 mm
Impedance: 16 Ω
Microphones: 2×
Bone conduction voice pickup: Yes
Ambient noise cancellation technology: VoiceFocus

Connectivity and compatibility

Bluetooth: 5.3
Charging connector: USB-C
Compatibility: Android 10 and above / iOS 14 and above
Software updates: OTA

Battery and endurance

Headphone battery life: up to 3 hours of continuous translation
Total battery life with charging case: up to 12 hours
Battery capacity of one earphone: 60 mAh
Case battery capacity: 500 mAh
Headphone charging time: approximately 50 minutes
Case charging time: approximately 1.5 hours
Charging method: USB-C

Dimensions and weight

Weight of one earphone: 5.7 g
Total set weight: 116.5 g
Headphone dimensions: 49.5 × 19.9 × 25.9 mm
Charging case dimensions: 66.6 × 54.3 × 33.9 mm

Package contents:

• 1x pair of Timekettle W4 Plus AI translation headphones
• 1x charging case
• 1x USB-C cable
• 1x replacement ear tips
• 1x ear hooks
• 1x user manual