1. Introduction
Thank you for choosing Jesebang Wireless Earbuds. These earbuds are designed to provide a high-fidelity audio experience with superior clear calls, featuring Bluetooth 5.3 technology, IP7 waterproof rating, and a comfortable earhook design, ideal for sports and daily use. This manual will guide you through the setup, operation, and maintenance of your new earbuds.

Overview of Jesebang Wireless Earbuds highlighting key features.
2. Package Contents
Please check the package to ensure all items are present:
- Jesebang Wireless Earbuds (Left and Right)
- Charging Case
- USB Charging Cable
- Eartips (S/M/L sizes)
- User Manual

Visual representation of the items included in the product package.
3. Product Overview
The Jesebang Wireless Earbuds feature an ergonomic design with flexible earhooks for a secure fit, especially during physical activities. The charging case includes a dual LED digital display to show the battery status of both the case and the individual earbuds.

Front view of the Jesebang Wireless Earbuds and charging case.

Detailed view of the earbud's acoustic components and features.
4. Setup
4.1 Charging the Earbuds and Case
Before first use, fully charge the earbuds and the charging case. The charging case has a 600mAh battery, providing up to 5 additional charges for the earbuds, totaling up to 50 hours of playtime.
- Connect the charging cable to the charging port on the case and a USB power source.
- The LED display on the case will show the charging progress. The number indicates the case's battery percentage, and the LED bars indicate the earbuds' charging status.
- Once fully charged, the display will show 100 for the case, and the earbud charging bars will fade.

The dual LED display on the charging case shows battery status.
4.2 Pairing with Your Device
The earbuds feature Bluetooth 5.3 for fast and stable transmission.
- Open the charging case. The earbuds will automatically power on and enter pairing mode.
- On your device (smartphone, tablet, etc.), enable Bluetooth.
- Search for "A21" in the list of available Bluetooth devices and select it to connect.
- Once connected, a voice prompt will confirm successful pairing. The earbuds will automatically reconnect to the last-paired device when taken out of the case.

Bluetooth 5.3 ensures stable and fast connection.
5. Wearing Instructions
For optimal sound quality and secure fit, follow these steps:
- Choose Eartips: Select the suitable eartips (S/M/L) that provide a comfortable and snug seal in your ear canal.
- Position Earhook: Place the earbud in your ear, then gently loop the earhook over your ear.
- Adjust for Comfort: Adjust the earbud and earhook until it feels secure and comfortable. The flexible earhooks are designed to adapt to your ear shape.

Ergonomic design for a secure and comfortable fit during sports.

Visual guide for correctly wearing the earbuds.
6. Operating Instructions (Touch Controls)
The Jesebang Wireless Earbuds feature sensitive touch controls on each earbud for easy management of music and calls.
| Function | Action |
|---|---|
| Voice Assistant | Tap (R/L) Earbud Thrice |
| Play/Pause | Tap (R/L) Earbud Twice |
| Previous Track | Long Press L Earbud for 2 seconds |
| Next Track | Long Press R Earbud for 2 seconds |
| Volume + | Tap R Earbud once |
| Volume - | Tap L Earbud once |
| Answer Call | Click Once L/R Earbud |
| Reject/Hang up Call | Long Press L/R Earbud for 2 seconds |

Detailed guide to the smart touch controls.
7. Maintenance
To ensure the longevity and optimal performance of your earbuds:
- Cleaning: Regularly clean the earbuds and charging case with a soft, dry cloth. Do not use harsh chemicals or abrasive materials.
- Water Resistance: The earbuds are IP7 waterproof, meaning they are protected against immersion in water up to 1 meter for up to 30 minutes. They are suitable for workouts, running, and can withstand sweat and rain. However, they are not designed for swimming or prolonged submersion. Ensure the charging port is dry before charging.
- Storage: Store the earbuds in their charging case when not in use to protect them and keep them charged.
- Temperature: Avoid exposing the earbuds to extreme temperatures (hot or cold) or high humidity.

The earbuds are IP7 waterproof, suitable for various activities.
8. Troubleshooting
If you encounter any issues with your Jesebang Wireless Earbuds, please refer to the following common solutions:
| Problem | Possible Solution |
|---|---|
| Earbuds not pairing |
|
| Only one earbud working |
|
| Low volume or poor sound quality |
|
| Charging case not charging |
|
| Earbuds not charging in case |
|
If the problem persists, please contact customer support for further assistance.
9. Specifications
| Feature | Detail |
|---|---|
| Model Name | A21 |
| Connectivity Technology | Wireless (Bluetooth 5.3) |
| Ear Placement | In Ear with Earhook |
| Water Resistance Level | IP7 Waterproof |
| Playtime | Up to 8 hours (single charge), 50 hours (with charging case) |
| Charging Case Battery | 600mAh |
| Speaker Size | 13mm |
| Frequency Range | 16 Hz - 20,000 Hz |
| Control Method | Touch Control |
| Microphone | Built-in (ENC Mic for clear calls) |
| Compatible Devices | iOS or Android smartphones, computer, Laptop, etc. |
| Item Weight | 4.6 ounces |
10. Warranty and Support
Jesebang products are manufactured with high quality standards. For any warranty claims or technical support, please refer to the warranty information provided at the time of purchase or contact Jesebang customer service directly. Please have your product model number (A21) and purchase details ready when contacting support.
For further assistance, please visit the official Jesebang website or contact their customer support channels.




