Introduction
Thank you for choosing the Cillso H97 Wireless Earbuds. These earbuds feature advanced Bluetooth 5.4 technology, HiFi stereo sound with deep bass, Environmental Noise Cancelling (ENC) for clear calls, and an IPX7 waterproof rating. Designed for comfort and extended use, they offer up to 40 hours of total playtime with the charging case. This manual provides essential information for setup, operation, maintenance, and troubleshooting to ensure optimal performance.
What's in the Box
- Cillso H97 Wireless Earbuds (Left and Right)
- Charging Case
- USB-C Charging Cable
- User Manual
Product Overview
Familiarize yourself with the components and features of your Cillso H97 Wireless Earbuds.

Figure 1: Internal view of an earbud, showcasing the advanced Bluetooth 5.4 chip for stable connection and low latency.

Figure 2: Exploded view illustrating the 13mm diaphragm drivers responsible for Hi-Fi stereo sound with deep bass and clear highs.

Figure 3: The charging case features an independent LED display to show real-time battery levels for both earbuds and the case.

Figure 4: Dimensions of the earbuds and charging case, emphasizing their lightweight and portable design. Each earbud weighs 3.5 grams, and the case weighs 32 grams.

Figure 5: Overview of the sensitive touch controls on the earbuds for various functions.

Figure 6: The earbuds feature an IPX7 waterproof rating, providing protection against sweat, rain, and splashes.
Setup
1. Initial Charging
- Before first use, place both earbuds into the charging case.
- Connect the USB-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. A full charge for the case takes approximately 1.5 hours.
- Ensure the earbuds are fully charged before initial use for optimal battery performance.
2. Pairing with a Device
- Open the charging case. The earbuds will automatically power on and enter pairing mode.
- On your device (smartphone, tablet, laptop), enable Bluetooth.
- Search for available Bluetooth devices and select "H97" from the list.
- Once connected, your device will confirm successful pairing. The earbuds will automatically reconnect to the last paired device when removed from the case and within range (up to 15 meters).
Operating Instructions
The Cillso H97 earbuds feature sensitive touch controls for easy management of audio playback and calls.
| Action | Function |
|---|---|
| Double tap Left/Right earbud | Play/Pause music |
| One tap Left/Right earbud | Answer/End call |
| Long press Right earbud (2s) | Next track |
| Long press Left earbud (2s) | Previous track |
| One tap Left/Right earbud (during call) | Volume control (specific tap pattern may vary, refer to device settings if needed) |
| Triple tap Left/Right earbud (typically) | Activate Voice Assistant |
Maintenance
Cleaning
- Regularly clean the earbuds and charging case with a soft, dry, lint-free cloth.
- Do not use abrasive cleaners, alcohol, or chemical solvents.
- Ensure charging contacts on both earbuds and case are clean and dry for proper charging.
Storage
- When not in use, store the earbuds in their charging case to protect them and keep them charged.
- Store in a cool, dry place away from extreme temperatures and direct sunlight.
Water Resistance
- The earbuds are IPX7 waterproof, meaning they are protected against temporary immersion in water up to 1 meter for 30 minutes.
- This rating protects against sweat, rain, and splashes. However, it is not recommended to swim or shower with the earbuds.
- Ensure the earbuds are dry before placing them back into the charging case to prevent damage.
Troubleshooting
Earbuds not pairing or connecting
- Ensure both earbuds are charged and removed from the charging case.
- Turn off and then turn on Bluetooth on your device.
- Delete "H97" from your device's Bluetooth list and attempt to pair again.
- Try resetting the earbuds (refer to specific reset instructions if available in a separate quick start guide, or place them back in the case and close for 10 seconds, then reopen).
Only one earbud working
- Ensure both earbuds are charged.
- Place both earbuds back into the charging case, close the lid, wait a few seconds, then open the lid and remove them simultaneously.
- If the issue persists, try resetting the earbuds and re-pairing.
Charging issues
- Check that the USB-C cable is securely connected to both the charging case and the power source.
- Ensure the charging contacts on the earbuds and inside the case are clean and free of debris.
- Try using a different USB-C cable or power adapter.
Poor sound quality
- Ensure the earbuds are properly seated in your ears.
- Check the audio source and volume levels on your connected device.
- Move closer to your connected device to reduce potential interference.
- Clean any earwax or debris from the earbud speaker grilles.
Specifications
| Feature | Detail |
|---|---|
| Model Name | H97 |
| Bluetooth Version | 5.4 |
| Bluetooth Range | Up to 15 meters (49 feet) |
| Audio Driver Size | 13mm Dynamic Driver |
| Frequency Response | 20Hz - 20kHz |
| Noise Control | Environmental Noise Cancellation (ENC) |
| Battery Life (Earbuds) | Up to 8 hours on a single charge |
| Total Playtime (with Charging Case) | Up to 40 hours |
| Charging Time (Case) | Approx. 1.5 hours (USB-C) |
| Water Resistance Level | IPX7 |
| Earbud Weight | 3.5 grams (each) |
| Charging Case Weight | 32 grams |
| Control Type | Touch Control |
| Compatible Devices | iOS 9.0+/Android 5.0+ and Bluetooth 4.0+ devices |
Warranty and Support
Cillso products are designed for reliability and performance. For warranty information, technical support, or any questions regarding your H97 Wireless Earbuds, please refer to the warranty card included in your packaging or contact Cillso customer service through the retailer where you purchased the product.
Please retain your proof of purchase for any warranty claims.





