1. Introduction
The ERAZER XT66PRO AI Translation Earbuds are advanced open-ear wireless Bluetooth earphones designed for real-time language translation across 135 languages. These earbuds integrate AI technology to facilitate seamless communication for travel, business, and learning. Beyond translation, they offer high-quality audio for music and calls, ensuring comfort and convenience for all-day wear.
2. Product Overview
Key Features:
- AI Real-time Translation: Supports 135 languages for online translation, including AI binaural translation, headphone + mobile phone translation, and AI chat.
- Extended Battery Life: Up to 8 hours of listening time per earbud, with the charging case providing up to 48 hours of total use.
- Comfortable and Lightweight Design: Ergonomically designed for a secure and comfortable open-ear fit, suitable for prolonged wear and intense activities.
- Bluetooth 5.4 Connectivity: Ensures stable and seamless wireless connection up to 10 meters.
- IPX5 Waterproof: Provides resistance against sweat and light splashes, making them suitable for various environments.
Product Components:
The ERAZER XT66PRO package includes:
- ERAZER XT66PRO AI Translator Earbuds (Left and Right)
- Smart Charging Case
- Type-C Charging Cable
- User Manual

Figure 2.1: The ERAZER XT66PRO AI Translation Earbuds in their purple charging case, showcasing the open-ear design.

Figure 2.2: Key features of the XT66PRO earbuds, highlighting multi-language support, water resistance, battery life, and Bluetooth version.
3. Setup
3.1 Initial Charging
Before first use, fully charge the earbuds and the charging case. Connect the provided Type-C charging cable to the charging port on the case and a power source. The LED display on the case will indicate the charging status.
3.2 App Download and Installation
The ERAZER XT66PRO earbuds require a dedicated mobile application for full translation functionality. Scan the QR code provided in the packaging or search for the 'SayMi' app in your device's app store (iOS/Android) to download and install it.
3.3 Bluetooth Pairing
- Ensure the earbuds are charged and inside the charging case.
- Open the charging case. The earbuds will automatically enter pairing mode.
- On your mobile device, go to Bluetooth settings and enable Bluetooth.
- Select 'ERAZER XT66PRO' from the list of available devices to pair.
- Once paired, open the 'SayMi' app and follow the in-app instructions to connect the earbuds to the application.
Video 3.1: This video demonstrates how to download the SayMi app, connect the earbuds via Bluetooth, and initiate the translation software. It covers the essential steps for initial setup and connectivity.

Figure 3.1: Visual guide for logging into the app, connecting Bluetooth, and preparing the earbuds for use.
4. Operating Instructions
4.1 Translation Modes
The ERAZER XT66PRO offers several translation modes through the SayMi app:
- AI Binaural Translation: Both users wear an earbud, and the app translates speech in real-time for a natural conversation flow.
- Headphone + Mobile Phone Translation: One person wears an earbud, and the other speaks into the phone's microphone. The translation is heard through the earbud and displayed on the phone screen.
- AI Chat: Engage in translated conversations directly within the app, useful for text-based communication or practicing languages.
Video 4.1: A demonstration of the ERAZER XT66PRO translation earbuds in action, showcasing their real-time language translation capabilities.
Video 4.2: This video highlights the AI language translation features of the ERAZER XT66PRO earbuds, demonstrating their use in various conversational scenarios.

Figure 4.1: Visual representation of the three primary translation modes available with the earbuds.

Figure 4.2: The earbuds in use for 'Translation Machine Mode', showing how language barriers are overcome in meetings or daily conversations.

Figure 4.3: Demonstrates the Face-to-Face Translation mode, ideal for direct conversations during global negotiations or travel.
4.2 Music Playback and Call Management
The earbuds feature touch controls for managing audio and calls:
- Play/Pause: Single tap on either earbud.
- Volume Adjustment: Double tap on either earbud.
- Next/Previous Track: Triple tap on either earbud to switch songs.
- Answer/End Call: Single tap on either earbud during an incoming call.
- Reject Call: Long press on either earbud during an incoming call.
- Activate Voice Assistant: Press and hold for 2 seconds on either earbud.
5. Battery and Charging
The ERAZER XT66PRO earbuds offer impressive battery performance:
- Earbud Playtime: Up to 8 hours on a single charge.
- Total Playtime with Case: Up to 48 hours with multiple charges from the case.
- Charging Time: Approximately 1.5 hours for a full charge of the earbuds and case.
To charge, place the earbuds back into their charging case. The digital display on the case indicates the remaining battery percentage. Connect the Type-C cable to the case and a USB power adapter for charging the case itself.

Figure 5.1: The earbuds and charging case, emphasizing the extended battery life for continuous use.
6. Care and Maintenance
To ensure the longevity and optimal performance of your ERAZER XT66PRO earbuds, follow these care guidelines:
- Cleaning: Regularly wipe the earbuds and charging case with a soft, dry cloth. Avoid using harsh chemicals or abrasive materials.
- Storage: Store the earbuds in their charging case when not in use to protect them from dust and damage.
- Water Exposure: While IPX5 waterproof, avoid submerging the earbuds in water or exposing them to heavy rain. Dry them thoroughly if they get wet.
- Temperature: Do not expose the earbuds to extreme temperatures (hot or cold) or high humidity.
- Charging: Use only the provided charging cable and a compatible power adapter.

Figure 6.1: The ergonomic and skin-friendly design of the earbuds, ensuring comfort even during extended wear.
7. Troubleshooting
If you encounter issues with your ERAZER XT66PRO earbuds, refer to the following common solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Earbuds not pairing | Low battery; not in pairing mode; Bluetooth off on device. | Charge earbuds; open case to activate pairing; enable Bluetooth on device and select 'ERAZER XT66PRO'. |
| Translation not working | Earbuds not connected to app; internet connection issue; incorrect language settings. | Ensure earbuds are connected in the 'SayMi' app; check internet connection; verify language settings in the app. |
| Poor audio quality | Earbuds not properly seated; interference; low battery. | Adjust earbud position; move away from sources of interference; charge earbuds. |
| Earbuds not charging | Charging cable or adapter issue; dirty charging contacts. | Try a different cable/adapter; clean charging contacts on earbuds and case. |
If problems persist, please contact customer support for assistance. The manufacturer encourages users to reach out if they encounter any issues during use.
8. Specifications
- Model: XT66PRO
- Brand: ERAZERL
- Connectivity: Bluetooth 5.4
- Translation Languages: 135 (online)
- Earbud Battery Life: Up to 8 hours (single ear)
- Total Battery Life (with case): Up to 48 hours
- Charging Time: Approximately 1.5 hours
- Water Resistance: IPX5
- Item Weight: 3.2 ounces
- Package Dimensions: 4 x 4 x 4 inches
9. Warranty and Support
ERAZERL products are manufactured with high standards of quality and durability. For any product-related inquiries, technical support, or warranty claims, please refer to the contact information provided with your purchase or visit the official ERAZERL website. Please retain your proof of purchase for warranty service.





