Introduction
This manual provides detailed instructions for the Jxrev W90 Wireless Earbuds. Please read this guide thoroughly to ensure proper setup, operation, and maintenance of your device. These earbuds feature Bluetooth 5.4 connectivity, IP7 waterproofing, ENC noise-canceling microphones, and a long-lasting battery.
What's in the Box
- 2 x Wireless Earbuds
- 1 x Wireless Charging Case
- 1 x Type-C Charging Cable
- 1 x User Manual
- 3 x Pairs of Silicone Eartips (S, M, L)

Image: Contents of the Jxrev W90 Earbuds package.
Setup
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 USB power source. The LED display on the case will show the charging status.

Image: Earbuds and charging case during charging, displaying battery levels.
2. Pairing with Your Device
- Ensure the earbuds are charged.
- Open the charging case. The earbuds will automatically power on and enter pairing mode.
- On your device (smartphone, tablet, etc.), enable Bluetooth.
- Search for "W90 Pro" or "Jxrev W90" in the list of available Bluetooth devices and select it to connect.
- Once connected, a voice prompt will confirm successful pairing.

Image: One-step pairing process with a smartphone.
3. Wearing the Earbuds
Select the appropriate silicone eartips (S, M, L) for a comfortable and secure fit. Insert the earbuds into your ears and gently rotate them until they feel snug. A proper fit enhances sound quality and noise isolation.

Image: Guide for comfortable and stable earbud wear with eartip options.
Operating Instructions
Touch Controls
The Jxrev W90 earbuds feature smart touch controls for various functions:
| Action | Function |
|---|---|
| Tap Once (L/R) | Play/Pause Music, Answer/End Call |
| Press and Hold 2s (L) | Volume Down |
| Press and Hold 2s (R) | Volume Up |
| Tap Twice (L) | Previous Track |
| Tap Twice (R) | Next Track |
| Tap Three Times (L/R) | Activate Voice Assistant (Siri, Google Assistant) |
| Press and Hold 3s (L/R) during call | Reject Call |

Image: Visual guide to earbud touch controls.
LED Display
The charging case features a dual LED display that shows the remaining battery percentage of the charging case and the individual charge levels of the left and right earbuds.
Single/Twin Mode
The earbuds can be used individually (single mode) or together (twin mode). Simply take one earbud out of the case to use it alone, or both for stereo sound.
Maintenance
Cleaning
Regularly clean your earbuds and charging case to ensure optimal performance and hygiene. Use a soft, dry, lint-free cloth. Do not use abrasive cleaners or submerge the devices in liquid.
Storage
When not in use, store the earbuds in their charging case to protect them from dust and damage. Store the case in a cool, dry place away from direct sunlight and extreme temperatures.
Water Resistance (IP7)
The Jxrev W90 earbuds are IP7 waterproof, meaning they are protected against immersion in water up to 1 meter for up to 30 minutes. This makes them suitable for sports and outdoor activities, protecting against sweat and raindrops. However, they are not designed for swimming or prolonged submersion. Ensure the earbuds are dry before placing them back in the charging case to prevent damage.

Image: Earbuds demonstrating IP7 waterproof capabilities.
Troubleshooting
Earbuds Not Pairing
- Ensure both earbuds are charged.
- Place both earbuds back into the charging case, close the lid, and then open it again to reset.
- Turn off and on your device's Bluetooth.
- Forget "W90 Pro" or "Jxrev W90" from your device's Bluetooth list and attempt to pair again.
Only One Earbud Working
- Ensure both earbuds are charged.
- Place both earbuds back into the charging case, close the lid, and then open it again. This should force them to reconnect to each other.
- If the issue persists, try resetting the earbuds by forgetting them from your device's Bluetooth settings and re-pairing.
Low Volume or Poor Sound Quality
- Adjust the volume on both your device and using the earbud touch controls.
- Ensure the earbuds are properly seated in your ears and you are using the correct size eartips for a good seal.
- Clean any debris from the earbud speakers and eartips.
- Ensure there are no obstructions between the earbuds and your connected device.
Charging Issues
- Verify the Type-C charging cable is securely connected to both the case and the power source.
- Try a different charging cable or power adapter.
- Ensure the charging contacts on the earbuds and inside the case are clean and free of debris.
Specifications
| Feature | Detail |
|---|---|
| Model Number | W90 |
| Bluetooth Version | 5.4 |
| Playtime (Single Charge) | Up to 8 hours |
| Total Playtime (with Charging Case) | Up to 50 hours |
| Charging Time | Approx. 1 hour (for full charge) |
| Water Resistance Rating | IP7 |
| Microphones | 4 ENC Noise Cancelling Mics |
| Speaker Size | 14 mm |
| Charging Port | Type-C |
| Earbud Weight | Approx. 3g per earbud |
| Noise Control | Sound Isolation |
| Sensitivity | 35 dB |
| Audio Latency | 35 Milliseconds |
Warranty and Support
The Jxrev W90 Wireless Earbuds come with a 1-year manufacturer's warranty. For warranty claims or technical support, please contact Jxrev customer service through the retailer where you purchased the product or visit the official Jxrev website.
For additional support, you may refer to the Jxrev Store on Amazon.
Product Videos
Video: Overview of Jxrev Wireless Earbuds, highlighting Bluetooth 5.4 and noise reduction features. This video is provided by a seller.
Video: Detailed demonstration of Jxrev Wireless Earbuds, including features and usage. This video is provided by a seller.
Video: Review and features of Kurdene Bluetooth 5.3 Wireless Earbuds, which are similar to the Jxrev W90 model. This video is provided by a seller.

