Introduction
Welcome
Thank you for choosing the Renimer BK11 Bluetooth 5.3 Wireless Earbuds. This manual provides detailed instructions for the proper setup, operation, and maintenance of your new earbuds. Please read this guide thoroughly before use to ensure optimal performance and longevity of your device.
Package Contents
- Renimer BK11 Wireless Earbuds
- Charging Case
- USB-C Charging Cable
- User Manual
- S/M/L Eartips
Product Overview
Earbud and Charging Case Diagram
Familiarize yourself with the components of your Renimer BK11 earbuds and charging case.

This image displays the Renimer BK11 wireless earbuds placed inside their charging case. The case features an LED display showing "100" and battery indicators, suggesting a full charge. The earbuds themselves have a sleek, dark design with a blue indicator light and a fingerprint-like icon on the touch control area. Model number BK11 and FCC ID are visible on the inside of the case.
Touch Controls
The earbuds feature touch-sensitive controls for various functions. The exact touch areas are indicated by the fingerprint icon on each earbud.
- Single tap: Play/Pause music, Answer/End a phone call.
- Double tap (Right earbud): Next track.
- Double tap (Left earbud): Previous track.
- Triple tap (Right earbud): Volume up.
- Triple tap (Left earbud): Volume down.
- Long press (approx. 2 seconds): Activate voice assistant, Reject an incoming call.
Setup
Charging the Earbuds and Case
Before first use, fully charge the earbuds and charging case to ensure maximum battery life.

This image illustrates the Renimer BK11 charging case being charged via a USB-C cable. The case's LED display shows the battery level, indicating the charging status.
- Connect the provided USB-C cable to the charging port on the case and to a standard USB power adapter (not included).
- The LED display on the case will indicate the charging status and current battery percentage.
- A full charge for the charging case takes approximately 1.5 hours.
- The earbuds provide 6-8 hours of playtime on a single charge.
- The 350 mAh charging case provides multiple recharges, extending total playtime up to 40 hours.
Bluetooth Pairing
Follow these steps to pair your Renimer BK11 earbuds with your device.

This image illustrates the Bluetooth pairing process, showing a smartphone's Bluetooth settings with "BK11" listed as an available device to connect to. The Renimer BK11 charging case and earbuds are also visible.
Initial Pairing
- Ensure both earbuds are charged.
- Open the charging case. The earbuds will automatically power on and enter pairing mode.
- On your device (smartphone, tablet, computer, etc.), enable Bluetooth.
- Search for "BK11" in the list of available Bluetooth devices and select it to connect.
- Once connected, a voice prompt will confirm successful pairing.
Reconnecting
Once paired, the earbuds will automatically reconnect to the last paired device when taken out of the charging case, provided Bluetooth is enabled on the device and it is within range.
Resetting Earbuds
If you experience pairing issues or only one earbud is connecting, you can reset the earbuds:
- Place both earbuds back into the charging case.
- Close the case lid and wait for approximately 5 seconds.
- Open the case lid again. The earbuds should re-synchronize and enter pairing mode.
- If issues persist, try forgetting "BK11" from your device's Bluetooth list and repeat the initial pairing process.
Operating Instructions
Wearing the Earbuds
For optimal sound quality, comfort, and secure fit, choose the correct eartip size.

This image highlights the ergonomic design of the Renimer BK11 earbuds, showing how they fit securely in the ear. It also displays three sizes of soft silicone eartips (S/M/L) to ensure a comfortable and secure fit for different users.
- Select the eartips (S/M/L) that provide the best seal and comfort for your ears.
- Gently insert the earbuds into your ear canal and twist slightly to secure them in place.
Call Functions
The earbuds feature CVC8.0 noise reduction and 4 microphones (ENC Mic, Talk Mic) for clear phone calls, minimizing background noise.

This image details the noise-cancelling capabilities, showing the placement of ENC (Environmental Noise Cancellation) and Talk microphones on the earbuds. A graph demonstrates the reduction of noise frequencies "Before" and "After" processing, indicating clearer phone calls.
- Answer/End Call: Single tap either earbud.
- Reject Call: Long press either earbud for approximately 2 seconds.
Music Playback
Control your music directly from the earbuds.
- Play/Pause: Single tap either earbud.
- Next Track: Double tap the right earbud.
- Previous Track: Double tap the left earbud.
- Volume Up: Triple tap the right earbud.
- Volume Down: Triple tap the left earbud.
Sound Quality
The Renimer BK11 earbuds feature 14.2mm drivers for excellent HiFi sound reproduction.

This image provides an internal view of the earbud's driver, highlighting its 14.2mm size and various components, indicating a focus on high-fidelity sound reproduction.
Maintenance
Cleaning
- Regularly clean the earbuds and charging case with a soft, dry, lint-free cloth.
- Do not use harsh chemicals, abrasive materials, or liquids directly on the earbuds or case.
- Gently remove any earwax or debris from the eartips and speaker mesh using a small, soft brush or cotton swab.
Storage
- When not in use, always store the earbuds in their charging case to protect them from damage and keep them charged.
- Store the device in a cool, dry place, away from extreme temperatures, direct sunlight, and humidity.
Troubleshooting
Common Issues and Solutions
- Earbuds not pairing:
- Ensure both earbuds are sufficiently charged.
- Place them back in the case, close the lid, then reopen to re-initiate pairing mode.
- Turn off and then turn on your device's Bluetooth.
- Forget "BK11" from your device's Bluetooth list and attempt to re-pair.
- Only one earbud working:
- Ensure both earbuds are charged.
- Place both earbuds back in the charging case, close the lid, wait a few seconds, then open the lid again. This often resynchronizes them.
- If the issue persists, try resetting the earbuds as described in the "Resetting Earbuds" section.
- Poor sound quality:
- Ensure the eartips are properly sealed in your ear canal. Try different eartip sizes.
- Clean any debris from the speaker mesh.
- Ensure the earbuds are within Bluetooth range (typically 10 meters) of your device and there are no significant obstructions.
- Check your device's audio settings and volume levels.
- Charging issues:
- Ensure the USB-C cable is securely connected to both the charging case and the power source.
- Try a different USB-C cable or power adapter to rule out cable/adapter issues.
- Clean the charging contacts on the earbuds and inside the case with a dry cotton swab.
If problems persist after attempting these solutions, please contact customer support for further assistance.
Specifications
Technical Specifications
| Feature | Specification |
|---|---|
| Model | BK11 |
| Bluetooth Version | 5.3 |
| Driver Size | 14.2 mm |
| Noise Reduction | CVC8.0, ENC |
| Microphones | 4 (ENC Mic, Talk Mic) |
| Water Resistance Rating | IP7 |
| Earbud Playtime | 6-8 Hours (single charge) |
| Charging Case Capacity | 350 mAh |
| Total Playtime (with case) | Up to 40 Hours |
| Charging Time (Case) | Approx. 1.5 Hours |
| Charging Port | USB-C |
| Earbud Weight | Approx. 3.9g (each) |
| Frequency Range | 20 Hz - 20,000 Hz |
| Battery Composition | Lithium-polymer |
| Compatible Devices | Mobile phones, Computers, Smart speakers |
Warranty and Support
Warranty Information
Renimer products are designed for reliability and performance. For detailed warranty information, please refer to the warranty card included in your product packaging or visit the official Renimer website for the most up-to-date policy.
Customer Support
If you have any questions, require technical assistance, or encounter any issues with your Renimer BK11 earbuds, please do not hesitate to contact our dedicated customer support team. Contact information can typically be found on the product packaging, the warranty card, or our official website.
