Timekettle W4 AI Interpreter Earbuds

The W4 AI Interpreter earbuds have comprehensive functions and support multiple translation modes, such as One-on-One conversation and Multi-Media translation. Its sound pickup technology is advanced, with 1 bone conduction sensor + 2 microphones for hybrid sound pickup technology, which ensures high translation accuracy in noisy environments. Its battery life can also meet daily usage requirements. At the same time, its design is unique and novel, and the semi-in-ear wearing method is comfortable. Overall, its comprehensive performance is excellent.

The bending angle of the earbud stems of the W4 AI Interpreter earbuds conforms to the curves of the tragus and the mandible. It is more ergonomic. Besides avoiding friction and pressure on the ears, the microphone at the end can naturally point towards the mouth for sound pickup, allowing for accurate sound collection without manual adjustment.

Online translation supports 52 languages and 106 accents, covering common languages such as English, French, German, Spanish, Japanese, and Korean, as well as characteristic accents from different countries and regions. Offline translation supports 8 languages (Chinese, English, Japanese, Korean, French, German, Spanish, and Russian) and 13 language pairs.

The W4 AI Interpreter earbuds are equipped with three microphones and adopt vector noise cancellation (VNC) and bone conduction + microphone hybrid sound pickup technology. They can effectively filter background noise and accurately pick up human voices. Even in noisy environments such as airports and train stations, they can clearly capture sounds to ensure the accuracy of translation.

It is suitable for scenarios where two people communicate face-to-face but speak different languages, such as business negotiations, international social gatherings, etc. Both parties wear the earbuds, turn on the One-on-One conversation mode, and the earbuds can translate what each other says in real-time to achieve smooth communication.

Yes. The W4 AI Interpreter earbuds are not only professional simultaneous-interpreting earbuds but also meet daily needs. They can be used for daily phone calls and music listening through a Bluetooth connection.

The one-on-one mode and Listen & Play functions support offline translation.

In environments without network access, such as remote areas or during flights, you can use the offline translation function. Although the number of supported languages and language pairs is relatively less than that of online translation, it can meet the basic translation needs of common languages.

In addition to the basic translation function, the APP of the W4 AI Interpreter earbuds supports the export of translation records, which is convenient for users to organize and review communication content. At the same time, users can set the target language for translation, choose a special tone, and adjust the earbud sound effects in the APP, providing a personalized user experience.

In scenarios where you need to listen to foreign language content and get translations, turn on this mode. The earbuds automatically receive surrounding sounds for listening translation, and you can also choose to play the translated content through the cell phone speaker, which is convenient for people around to hear the translation results. It is suitable for scenarios such as meetings and lectures.

The W4 AI Interpreter earbuds are available in two color options, "Midnight Blue" and "Sandy Gold". The frosted-texture shell is paired with subtle metallic patterns, making it a fashionable accessory for daily use.

The speaker size is 12mm. In terms of sound quality, although its main function is translation, it can also provide clear sound when listening to music, meeting the needs of daily casual music listening.

The battery capacity of a single earbud is 60mAh. The translation usage time is 4 hours, and the music playback time is 6 hours. The charging case has a capacity of 500mAh, and the charging time is 1.5 hours. It can charge the earbuds 2 times. The overall comprehensive battery life is 12 hours of translation and 18 hours of music playback.

Turn on the Bluetooth of your mobile phone and ensure it is on and in discoverable mode. Take out the W4 AI Interpreter earbuds, and they will automatically enter pairing mode (the indicator light flashes). Find "Timekettle W4 AI Interpreter" in the Bluetooth list of your mobile phone and click to pair to complete the connection.

The W4 AI Interpreter earbuds support mobile phone systems with Android 10 or higher or iOS 14 or higher.

The Bluetooth version is 5.3. Compared with lower versions, version 5.3 has lower power consumption, faster transmission speed, and more stable connections. It can reduce audio stuttering, latency, etc., providing a better experience when listening to music or doing call translation.

After connecting the earbuds to your mobile phone and opening the corresponding APP, find the translation function entry in the APP interface. Select the appropriate mode according to different translation scenarios, such as the One-on-One mode or the Multi-Media translation mode, to turn on the translation function.

Use a Type-C interface for charging, and the input voltage is 5V-1A. Avoid using inferior chargers to prevent damage to the earbuds and the charging case. When charging, put the earbuds into the charging case, close the lid, and the indicator light on the charging case will turn on to indicate that it is charging.

It adopts a semi-in-ear wearing method. This wearing method fits the contour of the ear, is less likely to cause a sense of oppression, and is relatively comfortable for long-term wear. It is suitable for scenarios where the earbuds are used for translation, calls, etc., for a long time.

The earbud size is 49.51x9.9x25.9mm, and the weight is 5.7g. It is small and light, easy to carry. The charging case size is 66.6x54.3x33.9mm, and the weight (including the earbuds) is 116.5g, which is convenient to put in your pocket or bag.

The W4 AI Interpreter earbuds are equipped with bone voiceprint sensors, and their anti-sound leakage performance has been improved compared to previous models. During use, it can effectively reduce the interference of the voices of people around you. Even in a noisy environment, you don't have to worry about the earphones picking up the voices of people nearby.

Yes, they can be exported. Find the translation record option in the APP, select the records you need to export, and follow the operation steps prompted by the APP to export and save the translation records to your mobile phone locally.

No, it doesn't have an active noise-canceling function. However, it is equipped with 1 bone conduction sensor + 2 microphones and adopts vector noise cancellation (VNC) to improve sound pickup accuracy.

The W4 AI Interpreter has a call noise-reduction (ENC) function. During daily calls, it can effectively reduce the interference of environmental noise, making the call sound clearer. Even in a noisy environment, the other party can clearly hear your voice.

The standard packaging includes a Type-C charging cable, 1 pair of ear hooks, and 2 pairs of ear tips. There is no adapter.

The core translation functions of the two are similar, but:

• The price of the W4 AI Interpreter is $349, while the price of the W4 AI Interpreter Pro is $449.
• The W4 AI Interpreter has a stronger sound pickup performance. It is equipped with 1 bone conduction sensor + 2 microphones and adopts the bone conduction + microphone hybrid sound pickup technology; the W4 AI Interpreter Pro is only equipped with three microphones.
• The W4 AI Interpreter does not support call translation, while the W4 AI Interpreter Pro supports two-way call translation.
• The music playback duration of the W4 AI Interpreter is 6 hours, while that of the W4 AI Interpreter Pro is 12 hours.
• The translation usage duration of the W4 AI Interpreter is 4 hours, and that of the W4 AI Interpreter Pro is 4 hours.
• W4 is a semi-in-ear headphone, while W4 Pro is an open-ear headphone.
• W4 is more compact and portable for on-the-go use, while W4 Pro is better suited for indoor settings like conference rooms.

The Unlimited Plan is a premium subscription from Timekettle for W4 users. Once subscribed, you unlock:

• Unlimited Multi‑Media Translation – No more trial limits. Translations run continuously without interruption.
• Unlimited Voice Call Translation – Enjoy unlimited time for phone and voice translations, with no caps.
• AI Realtime Recap – During multi‑media or voice call translations, the AI automatically generates live conversation summaries, making it easy to review key points.

In a nutshell: Subscribing gives you unlimited use of two core translation features + AI smart summaries – for seamless, worry‑free cross‑lingual communication.

No. Not subscribing will not affect any of your existing features.

• Unchanged features (always free & unlimited):
  The original One-on-One and Listen & Play modes on the W4 remain fully accessible with no restrictions.
• Trial for new features:
  The newly added Multi-Media Translation and Voice Call Translation modes come with a complimentary 10-minute trial per device for each feature.
• No interruption during trial:
  Even if your free trial minutes run out during an active session, your ongoing translation will not cut off – you can finish that session normally.

Important: Once the free trial time is completely exhausted, a subscription is required to start new translation sessions. Any translation already in progress will not be interrupted.

Subscribing unlocks two core capabilities:
1. Unlimited Multi-Media Translation and Voice Call Translation: The free trial is only for occasional use. If you frequently need real-time translation for business meetings, international calls, or video conferences, subscribing removes all time limits so your conversations never cut off.
2. Automated AI Summaries, the AI extracts key talking points in real time, making it perfect for: · Meeting Reviews: No manual note-taking; AI distills the core takeaways.
· Long Dialogues: Easily check summaries mid-conversation to avoid missing details.
· Easy Archiving: Access past summaries in your history after the session ends."

That’s a fair question. Here’s why:

• Your existing features remain 100% free forever
  The One-on-One and Listen & Play modes that came with your W4 will always work as they do today – no change, no charge.
• New features are premium software add‑ons
  Multi‑Media Translation, Voice Call Translation, and AI Realtime Recap are delivered via OTA updates. They require ongoing cloud computing power and AI model support, which involve continuous operating costs (server, bandwidth, model improvements). A subscription ensures we can maintain high service quality, reliability, and regular updates for these advanced capabilities.
• You can try before you subscribe
  Every device comes with a free 10‑minute trial for each new feature – no commitment needed. This lets you experience the value first‑hand.

You’re not losing anything you already paid for. The optional subscription unlocks cloud‑based, AI‑powered features for users who need them, while keeping the core product fully functional.

We recommend trying the free trial first – no immediate subscription needed.

1. Automatic trial activation
   Once connected via Bluetooth, your W4 automatically receives 10 minutes of free trial for both Multi‑Media Translation and Voice Call Translation.
2. Try it in your real‑life scenarios
   Use those minutes to test the translation quality in the situations that matter most to you – meetings, calls, travel, etc.
3. Decide later
   If you find the features valuable, you can subscribe at any time – there’s no rush.

Important note: The free trial minutes are a one‑time allocation that never expires. Use them when you need them most to fully evaluate the service before subscribing.

Yes, there is a free trial, and the subscription pricing is as follows:

💰 Subscription cost

• $14.99/month for the Unlimited Plan – gives you unrestricted access to all features.
• For users outside the US, prices are automatically adjusted by Apple based on local exchange rates and taxes. The final amount will be shown on the App Store.

🆓 Free trial

• Each W4 device automatically receives 10 minutes of free trial for both Multi‑Media Translation and Voice Call Translation upon its first Bluetooth connection.
• No separate application is needed.
• Note: AI Realtime Recap is not available during the free trial.

Tip: Use the free trial to test translation quality in your real scenarios before subscribing.

Yes – your subscription is linked to your account, not a specific device.

• Device swapping – If you switch to another W4 device, your subscription benefits will follow automatically as long as you log into the same account.
• Multi‑device support – You can enjoy unlimited translation and AI summaries across different W4 devices under the same account.

Note on free trials:
Free trial minutes are tied to the hardware device (by SN) – each new device gets its own trial allocation.
However, subscription benefits are tied to your account and are shared across all your devices.

The subscription process is simple and takes just a few taps:

1. Open the app – Download and open the latest Timekettle app, then go to the W4 device homepage.
2. Find the entry – Tap the “Free Plan” tag or the subscription entry inside the AI translation card.
3. Select the plan – On the paywall page that appears, tap “Subscribe to Unlimited Plan”.
4. Complete payment – The system will launch Apple Pay. Confirm with Face ID or Touch ID to finish.

Once payment succeeds: Your subscription takes effect immediately, and you’ll be automatically redirected to the subscription management page to view your active benefits.

Yes – you can cancel at any time with no cancellation fees.

📱 How to cancel

1. Open iPhone Settings → Tap your Apple ID at the top → Tap Subscriptions.
2. Find the Timekettle subscription and tap Cancel Subscription.

⏳ What happens after cancellation

• Keep access until expiry – Your benefits remain active until the end of the current billing cycle, with no further charges.
• Re‑subscribe anytime – You can easily subscribe again whenever you need it.

Example: If you subscribe on June 5 and cancel on June 20, you can still use all premium features normally until the subscription officially expires on July 5.

Note: Canceling does not cut off your access immediately. You keep full benefits until the billing period ends.