1. Introduction
The Hotmoon Cocoon 2 Sound Machine is designed to enhance your sleep, relaxation, and focus with a wide array of soothing sounds and ambient lighting. This device features dual-speakers for rich audio, 40 distinct sounds, 8 night light colors, and flexible timer options. Please read this manual thoroughly to ensure proper use and maintenance of your device.
2. Safety Information
WARNING: This product emits sound. Prolonged exposure to high sound levels can cause hearing damage. To reduce risk, avoid prolonged use at high volume levels. Do not use this product as a toy. This product is intended for use by adults and should not be used by children. To prevent risk of electric shock, do not operate this product if the power cord is damaged. Unplug the product from the power source before cleaning.
3. Package Contents
- Hotmoon Cocoon 2 Sound Machine
- 4.9ft (1.5m) USB Type-C Cable
Note: A power adapter is not included. Please use a compatible USB power adapter (e.g., a standard phone charger) to power the device.

4. Product Features
- 40 Soothing Sounds: Includes 10 fan sounds, 10 nature tracks, 10 lullabies, and 10 ambient noises (including White, Pink, Brown, and Green noise).
- Upgraded Dual-Speaker Design: Delivers enhanced audio with richer bass, wider frequency response, and lower distortion.
- 8 Calming Night Lights: Offers a selection of 8 soft, eye-friendly colors.
- 4 Timer Options: Choose from 45 minutes, 90 minutes, 8 hours, or continuous play.
- Intuitive Controls: Easy-to-use buttons with one-touch operation.
- Memory Function: Remembers your last sound, volume, and light settings.
- Plug-in Use Only: Requires continuous power via the USB-C cable (no internal battery).

5. Setup Instructions
- Connect Power: Plug the provided USB Type-C cable into the sound machine. Connect the other end of the USB cable to a compatible USB power adapter (not included) and then plug the adapter into a wall outlet.
- Power On: Press the 'Power' button (⏻) located on the control panel to turn on the sound machine.
- Initial Sound: The device will start playing the last used sound or a default sound.

6. Operating Instructions
6.1. Sound Selection
The Cocoon 2 offers 40 unique sounds categorized into four groups: Noise, Fan, Nature, and Baby Melodies. Each category has 10 distinct sounds.
- Press the corresponding category button (e.g., 🎵 for Baby Melodies, 🌬 for Fan, 🌊 for Nature, 🎧 for Noise) to cycle through the 10 sounds within that category.
- The device will remember the last selected sound when powered off and on.
6.2. Volume Adjustment
- Press the 'Volume Up' (🔊) button to increase the sound volume.
- Press the 'Volume Down' (🔉) button to decrease the sound volume.
- There are 32 volume levels available.
6.3. Night Light Control
The device features 8 calming night light colors.
- Press the 'Light' (🔆) button to turn on the night light and cycle through the 8 available colors.
- Press and hold the 'Light' button for 2-3 seconds to turn off the night light. Pressing it again will turn it back on to the last selected color.
- The night light can be used independently or in conjunction with sounds.

6.4. Timer Function
Set a timer for automatic shut-off or allow continuous play.
- Press the 'Timer' (⏱) button to cycle through the available timer options: 45 minutes, 90 minutes, 8 hours, or continuous play (indicated by 'ON').
- The selected timer duration will be indicated by an illuminated LED above the timer button.

7. Sound List
The Hotmoon Cocoon 2 offers a diverse range of 40 sounds across four categories:
| Noise Sounds | Fan Sounds | Nature Sounds | Baby Melodies |
|---|---|---|---|
| White Noise | Box Fan | Heavy Rain | Rock-A-Bye Baby |
| Green Noise | AC Fan | Rainstorm | Brahms |
| Brown Noise | Loud Fan | Thunderstorm | Schubert |
| Pink Noise | High Mellow Fan | Rain in Garden | The Blue Danube |
| Soothing Pink Noise | Large Fan | Morning Seashore | Hush to Sleep |
| Airplane Cabin | Low Mellow Fan | Sunset Waves | Dreaminess |
| Air Conditioner | Bladeless Fan | Creek | Twinkle Shiny Lights |
| Clothes Dryer | Exhaust Fan | Fireplace | Deep Sleep |
| Vacuum Cleaner | AC Motor Fan | Cricket | Heartbeat |
| Crowd | Misting Fan | Birds | Shushing |
8. Maintenance
To ensure the longevity and optimal performance of your Hotmoon Cocoon 2 Sound Machine, follow these simple maintenance guidelines:
- Cleaning: Always unplug the device from the power source before cleaning. Use a soft, dry cloth to wipe the exterior. Do not use liquid cleaners or abrasive materials.
- Storage: When not in use for extended periods, store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Avoid Moisture: Keep the device away from water or high humidity environments to prevent damage.
9. Troubleshooting
If you encounter any issues with your Hotmoon Cocoon 2 Sound Machine, please refer to the following common solutions:
- Device not turning on: Ensure the USB-C cable is securely connected to both the device and a working USB power adapter, and that the adapter is plugged into a live power outlet.
- No sound: Check the volume level using the 'Volume Up' (🔊) button. Ensure a sound category is selected.
- Night light not working: Press the 'Light' (🔆) button to cycle through colors or press and hold to turn it on if it was previously off.
- Sound quality issues: Ensure the device is placed on a stable, flat surface. Avoid placing it near other electronic devices that might cause interference.
For further assistance, please contact Hotmoon customer support.
10. Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 5 x 4.92 x 4.57 inches |
| Item Weight | 13.76 ounces (0.39 kg) |
| Model Number | HMNL06 |
| Power Source | Corded Electric (USB Type-C) |
| Number of Sounds | 40 |
| Night Light Colors | 8 |
| Timer Options | 45 min, 90 min, 8 hours, Continuous |
| Material Type | Plastic |
11. Official Product Video
12. Warranty and Support
Hotmoon products are manufactured with quality and reliability in mind. For information regarding warranty coverage, product registration, or technical support, please visit the official Hotmoon website or contact their customer service department directly. Keep your purchase receipt as proof of purchase.