Introduction
The Soundcore K20i Semi-in-Ear Wireless Earbuds are designed to provide a comfortable listening experience with clear audio and extended battery life. This manual provides essential information for setting up, operating, and maintaining your earbuds.

Image: Soundcore K20i Semi-in-ear earbuds with icons representing BassUp Tech, Extended Playtime, 13mm Drivers, AI Enhanced Clear Calls, and 22 Preset EQs.
What's in the Box
- Soundcore K20i Earbuds
- Charging Case
- USB-C Cable
- Quick Start Guide (not included in this digital manual)

Image: The Soundcore K20i earbuds, charging case, and USB-C charging cable laid out, representing the contents of the product box.
Setup
1. Charging the Earbuds and Case
Before first use, fully charge the earbuds and the charging case. Connect the provided USB-C cable to the charging port on the case and to a power source. The indicator light on the case will show charging status.
- A 10-minute charge provides approximately 2 hours of playback.
- The case provides multiple charges, extending total playtime up to 36 hours.

Image: Illustration showing the Soundcore K20i earbuds inside their charging case, highlighting the fast charging capability: "10 Min Charge = 2H Playtime".
2. Bluetooth Pairing
To pair your Soundcore K20i earbuds with your device:
- Open the charging case. The earbuds will automatically enter pairing mode.
- On your device (smartphone, tablet, etc.), go to the Bluetooth settings.
- Select "Soundcore K20i" from the list of available devices.
- Once connected, you will hear an audio prompt, and the indicator light on the earbuds will change.
The earbuds utilize Bluetooth 5.3 for a stable and efficient connection.

Image: A graphic illustrating the Soundcore K20i earbuds and charging case next to a smartphone displaying a successful Bluetooth 5.3 connection.
3. Soundcore App Control
Download the Soundcore app from your device's app store to unlock additional features and customization options for your K20i earbuds. The app allows you to:
- Customize EQ settings from 22 presets or create your own.
- Adjust touch controls.
- Access Game Mode.
- Find your device.

Image: A smartphone screen displaying the Soundcore app interface with various sound effects and control customization options for the K20i earbuds.
Operating Instructions
Comfort and Fit
The Soundcore K20i earbuds feature a semi-in-ear design, weighing only 3.3g each, providing a comfortable and breathable fit without the need for ear tips. This design allows for awareness of your surroundings while enjoying audio.

Image: A diagram comparing a traditional in-ear earbud fit with the semi-in-ear design of the Soundcore K20i, emphasizing breathable comfort.
Audio Quality
Equipped with 13mm dynamic drivers and BassUp technology, the K20i earbuds deliver clear and balanced sound, ideal for various audio content including podcasts and music. You can further refine your listening experience using the customizable EQ settings in the Soundcore app.

Image: A woman wearing Soundcore K20i earbuds, with a "BassUp" logo and text indicating clear sound from 13mm drivers.
Call Quality
The K20i earbuds feature dual microphones and AI-powered noise reduction technology (ENC) to isolate your voice from background noise, ensuring clear calls even in noisy environments.

Image: An exploded view of the Soundcore K20i earbud highlighting the internal microphones and AI noise reduction algorithm for clear communication.
Intuitive Touch Controls
Manage your audio playback, adjust volume, and handle calls directly from the earbuds using intuitive touch commands. These controls can be customized via the Soundcore app.
- Double tap right earbud: Play/Pause music.
- Double tap left earbud: Skip song.
- Double tap either earbud: Answer calls.
- Press and hold for 2 seconds: Reject calls.

Image: A graphic detailing the touch control functions for music playback and call management on the Soundcore K20i earbuds.
Gaming Mode
Activate Gaming Mode through the Soundcore app for enhanced audio clarity and reduced latency, providing a competitive edge in gaming by making footsteps and shots more distinct.

Image: A person wearing Soundcore K20i earbuds while playing a mobile game, illustrating the Gaming Mode feature.
Single Earbud Use
The Soundcore K20i earbuds support single earbud use, allowing you to listen to audio while keeping one ear open to your surroundings for increased awareness.

Image: A woman using one Soundcore K20i earbud while holding the charging case, demonstrating the "Listen Solo, Stay Aware" feature.
Maintenance
Water Resistance
The Soundcore K20i earbuds are IPX5 water-resistant, protecting them from sweat and light rain. This makes them suitable for workouts and outdoor activities. Avoid submerging the earbuds in water.

Image: Soundcore K20i earbuds with water droplets on them, indicating their IPX5 water-resistant rating.
Cleaning
To maintain optimal performance and hygiene, regularly clean your earbuds and charging case. Use a soft, dry, lint-free cloth to wipe away any dust or debris. Do not use abrasive cleaners or immerse in liquids.
Troubleshooting
If you encounter any issues with your Soundcore K20i earbuds, try the following general troubleshooting steps:
- Ensure both earbuds and the charging case are fully charged.
- Reset the Bluetooth connection on your device and re-pair the earbuds.
- If audio is distorted or unclear, check the EQ settings in the Soundcore app.
- For persistent issues, refer to the full user manual available on the Soundcore support website or contact customer support.
Specifications
| Feature | Detail |
|---|---|
| Model Name | K20i (A3994) |
| Brand | Soundcore |
| Manufacturer | Anker |
| Connectivity Technology | Wireless (Bluetooth 5.3) |
| Audio Driver Size | 13 Millimeters |
| Battery Life (Earbuds) | Up to 6 Hours (single charge) |
| Total Playtime (with case) | Up to 36 Hours |
| Fast Charging | 10 min charge = 2 hours playback |
| Water Resistance | IPX5 |
| Noise Control | Environmental Noise Cancellation (ENC) |
| Control Method | Touch |
| Weight (per earbud) | 3.3g (approx.) |
| Dimensions | 2.32 x 1.76 x 1.04 inches (case) |
Official Product Video
Video: An official product video showcasing the features and design of the Soundcore K20i earbuds, including semi-in-ear comfort, 13mm drivers, extended playtime, AI-enhanced clear calls, and available colors.
Warranty and Support
Soundcore products are backed by a manufacturer's warranty. For detailed warranty information, product support, or to contact customer service, please visit the official Soundcore website or refer to the contact information provided in your product packaging.
For further assistance, you may also visit the product detail page on Amazon.





