Introduction
This manual provides detailed instructions for operating your Vivaniir V66 128GB Digital Voice Recorder. Designed for high-quality audio capture, this portable device features a large 128GB memory, extended battery life, intelligent voice activation, and advanced noise reduction technology. Please read this manual thoroughly to ensure proper use and maximize the device's performance.

Figure 1: Vivaniir V66 Digital Voice Recorder
What's in the Box
The Vivaniir V66 package includes the following items:
- 1x Vivaniir V66 Digital Voice Recorder
- 1x USB-C Charging/Data Cable
- 1x Earphones
- 1x In-line Control for Earphones
- 1x Short Dual Type-C Cable
- 1x User Manual

Figure 2: Package Contents
Product Overview
The Vivaniir V66 is designed for portability and ease of use. Its sleek metal casing houses essential controls and ports.
- USB-C Port: For charging and data transfer.
- Headphone Jack (3.5mm): For audio playback.
- ON/OFF/RESET Switch: Controls power and recording functions.
- Indicator Light: Provides status feedback.
- Built-in Microphone: For capturing audio.

Figure 3: Vivaniir V66 Device Layout and Dimensions
Setup
Charging the Device
Before initial use, ensure your Vivaniir V66 is fully charged. Connect the device to a power source (e.g., computer USB port or USB wall adapter) using the provided USB-C cable. The indicator light will show charging status. A full charge takes approximately 6 hours and provides up to 300 hours of continuous recording time.

Figure 4: Charging and Battery Life
Operating Instructions
One-Touch Recording
- To begin recording, slide the ON/OFF/RESET switch to the "ON" position.
- The device will start recording automatically after a 5-second delay. The indicator light will turn off to ensure discreet operation.
- To save the recording, slide the switch to the "OFF" position. The recording file will be automatically saved with a date and time stamp for easy organization.

Figure 5: One-Touch Recording and File Management
Voice Activated Recording
The Vivaniir V66 features an intelligent voice activation function to optimize recording and storage.
- To activate this feature, please refer to the detailed instructions in the full user manual. (This feature is disabled by default).
- Once activated, the recorder will automatically pause when no sound is detected and resume recording instantly when sound is present. This reduces silent clips, saves storage space, and conserves battery power.

Figure 6: Voice Activation Function
Playback Options
You can listen to your recordings using several methods:
- Via Computer: Connect the voice recorder to your computer using the USB-C cable. You can then directly play the files or transfer them to your computer for storage and editing.
- Via Earphones with In-line Control: The included earphones come with an in-line control unit. Plug the earphones into the device's 3.5mm jack. Use the control buttons to play, pause, skip to the next/previous track, and adjust the volume.
- Via Mobile Phone (OTG): If your mobile phone supports OTG (On-The-Go) functionality, activate it in your phone's settings. Then, connect the voice recorder to your phone using the appropriate cable (e.g., the short dual Type-C cable if applicable) to access and play recordings.

Figure 7: Multiple Playback Methods
Product Demonstration Video
Video 1: This video demonstrates the Vivaniir V66 Digital Voice Recorder's compact size, one-touch recording, and playback via computer. It also highlights the sound quality and ease of use.
Unboxing and Accessories Video
Video 2: This video shows the unboxing of the Vivaniir V66 Digital Voice Recorder and its included accessories, such as earphones, in-line control, and various cables.
Key Features
- 128GB Extended Memory: Provides ample storage for 900-9000 hours of recording, suitable for long meetings, seminars, and lectures.
- 300 Hours Ultra-Long Battery Life: Equipped with a 2500mAh high-capacity battery, offering up to 300 hours of continuous recording after a 6-hour charge. Supports Type-C fast charging.
- 1536Kbps High-Definition Sound Quality: Captures audio with exceptional clarity and detail.
- Intelligent DSP Noise Reduction: Features a new-generation 2159 noise reduction chip to effectively eliminate background noise and ensure clear, realistic sound from all directions.
- One-Touch Recording: Simple slide switch operation for instant recording and saving.
- Smart Voice Activation: Automatically pauses recording during silence and resumes when sound is detected, saving storage and power.
- Durable Metal Casing: Made from black aluminum alloy, the device is lightweight (86g), robust, portable, and wear-resistant.

Figure 8: Vivaniir V66 Feature Comparison
Specifications
| Brand | Vivaniir |
| Model Number | V66 |
| Memory Capacity | 128 GB |
| Audio Format | MP3, WAV |
| Recording Quality | 1536Kbps (lossless) |
| Battery Capacity | 2500mAh |
| Average Battery Life | 300 Hours (recording) |
| Digital Recording Duration | 18000 minutes |
| Microphone Operating Mode | Voice recognition, noise reduction |
| Hardware Interface | USB-C |
| Headphone Jack | 3.5 mm |
| Product Dimensions (DxWxH) | 0.8 x 6 x 10 cm |
| Item Weight | 86 Grams |
| Compatible Devices | Laptop |
| Product Warranty | 1 year |
Troubleshooting
If you encounter any issues with your Vivaniir V66 recorder, please refer to the following general troubleshooting tips:
- Device not turning on: Ensure the battery is charged. Connect to a power source using the USB-C cable.
- Recording issues: Check if the memory is full. Ensure the switch is in the "ON" position.
- Playback issues: Verify earphones are correctly connected. Ensure the volume is adjusted using the in-line control or computer settings.
- Connection issues with PC: Try a different USB port or cable. Ensure the device is properly recognized by your computer.
- Voice Activation not working: Ensure the feature is enabled in the device settings (refer to the full manual for activation steps).
For more detailed troubleshooting or persistent issues, please contact customer support.
Warranty and Support
The Vivaniir V66 Digital Voice Recorder comes with a 1-year product warranty.
Vivaniir is committed to providing excellent customer service. For any technical assistance, product inquiries, or warranty claims, please contact Vivaniir customer support. They offer a 24-hour customer service response and lifetime technical support to ensure you get help during use.
Contact information can typically be found on the official Vivaniir website or within the product packaging.
