Introduction
The eSynic ESY407 is a versatile sound healing device designed to promote relaxation, improve sleep, and aid in meditation. It combines the soothing tones of Tibetan singing bowls with a variety of white noise and nature sounds, complemented by a gentle night light and color mood lamp. This manual provides detailed instructions for the safe and effective use of your device.

Image: The eSynic ESY407 device positioned next to a person meditating, illustrating its use for relaxation and mindfulness.
Safety Instructions
- Read all instructions before use and retain for future reference.
- Do not expose the device to water, moisture, or extreme temperatures.
- Keep out of reach of children and pets.
- Use only the provided charging cable or a certified Type-C cable for charging.
- Do not attempt to disassemble, repair, or modify the device. This will void the warranty.
- Avoid placing the device near heat sources or in direct sunlight.
Package Contents
- eSynic ESY407 White Noise Machine
- USB Type-C Charging Cable
- User Manual
Product Overview
The eSynic ESY407 features an intuitive control panel on its top surface, allowing easy access to all functions. The device is compact and portable, designed for use in various environments.

Image: A top-down view of the eSynic ESY407 device, highlighting the various control buttons for sound, light, and timer functions.
Controls and Indicators:
- Power Button: Turns the device on/off.
- Sound Category Buttons: Dedicated buttons for Singing Bowls, White Noise/Nature Sounds, Baby Soothing Sounds, and Breathing Exercises.
- Sound Selection Buttons: Navigate through sounds within a category.
- Volume Control Buttons: Adjust sound output level (16 steps).
- Light Button: Toggles night light and color mood lamp modes.
- Brightness Control: Adjusts light intensity (5% to 100%).
- Timer Button: Sets auto-off timer (15/30/60/90 minutes) or continuous play.
- USB-C Charging Port: Located on the side for power input.
Setup
1. Charging the Device
Before first use, fully charge the eSynic ESY407. Connect the provided USB Type-C cable to the charging port on the device and the other end to a standard USB power adapter (not included) or a computer USB port. The charging indicator light will show the charging status. A full charge provides over 30 hours of continuous playback at medium volume.

Image: The eSynic ESY407 device being charged via a USB-C cable connected to an external power bank, demonstrating its rechargeable feature.
2. Powering On/Off
Press and hold the Power Button for a few seconds to turn the device on or off.
Operating Instructions
1. Sound Selection
The device offers 38 distinct sounds, categorized for easy access:
- Singing Bowls (8 tones): Press the dedicated Singing Bowl button to cycle through 8 authentic Tibetan singing bowl tones.
- White Noise & Nature Sounds (22 sounds): Press the White Noise/Nature button. Use the sound selection buttons to browse through 22 sounds including rain, ocean waves, birds, and fireplace.
- Baby Soothing Sounds (4 sounds): Press the Baby Soother button for lullabies and womb sounds.
- Breathing Exercises (4 modes): Press the Breathing Exercise button to access visual and audio guides for techniques like 4-7-8 or box breathing.
2. Volume Control
Use the Volume Up (+) and Volume Down (-) buttons to adjust the sound level. There are 16 volume steps, from whisper-quiet to room-filling.
3. Light Control
The device features a gentle night light and a 7-color mood lamp.
- Turn On/Off Light: Briefly press the Light Button.
- Change Colors: Briefly press the Light Button repeatedly to cycle through 7 color modes (red, orange, blue, green, light blue, purple, coral) and a multicolor breathing mode.
- Adjust Brightness: Press and hold the Light Button to adjust brightness from 5% to 100%. Release when desired brightness is reached.

Image: The eSynic ESY407 device displaying its various light modes and indicating the categories of sounds available, such as singing bowls, guided breathing, and meditation melodies.
4. Timer Function
Set an auto-off timer for convenience:
- Press the Timer Button to cycle through timer options: 15 minutes, 30 minutes, 60 minutes, 90 minutes, or continuous play (no timer).
- The selected timer duration will be indicated by a light or display.

Image: The eSynic ESY407 device shown with various auto-off timer settings (15, 30, 60, 90, 120 minutes) indicating its timed playback feature.
5. Memory Function
The device automatically remembers your last sound, volume, light setting, and timer preference when powered off, ensuring a consistent experience upon restart.
Maintenance
- Clean the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Ensure the charging port is free of dust and debris.
- Store the device in a cool, dry place when not in use for extended periods.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not turn on. | Low battery or no charge. | Charge the device fully using the USB-C cable. |
| No sound output. | Volume is too low or muted. | Increase the volume using the '+' button. |
| Light is not working. | Light function is off or brightness is set to minimum. | Press the Light Button to turn it on. Press and hold to adjust brightness. |
| Device not charging. | Faulty cable or power adapter. | Try a different USB-C cable and power adapter. Ensure connections are secure. |
Specifications
- Model Name: ESY407
- Dimensions: 4.09 x 4.09 x 2.72 inches
- Weight: 333 Grams
- Material: Acrylonitrile Butadiene Styrene (ABS)
- Battery: 2000mAh Lithium Battery
- Battery Life: 30+ hours (at medium volume)
- Sound Types: 38 (8 Singing Bowls, 22 White Noise/Nature, 4 Baby Soothing, 4 Breathing Exercises)
- Volume Levels: 16 steps
- Light Modes: Warm Night Light, 7 Color Mood Lamp, Multicolor Breathing Mode
- Timer Settings: 15/30/60/90 minutes, Continuous
Warranty
This eSynic product is covered by a 12-month manufacturer's warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage caused by misuse, accident, unauthorized modification, or external causes.
Support
For further assistance, technical support, or warranty claims, please contact eSynic customer service. Refer to the contact information provided on the product packaging or the official eSynic website.