Introduction
Welcome to your King Lucky i121 Clip-on Open Ear Bluetooth Earbuds. These earbuds are designed to provide a comfortable audio experience with the added versatility of detachable decorative earrings. This manual will guide you through the setup, operation, and maintenance of your new device.
Safety Information
- Do not expose the earbuds or charging case to extreme temperatures or direct sunlight.
- Avoid dropping or applying excessive force to the device.
- Keep out of reach of children and pets.
- Do not attempt to disassemble or modify the product. This will void the warranty.
- Use only the provided charging cable or a certified equivalent.
- Prolonged listening at high volume levels may cause hearing damage.
Package Contents

This image displays the King Lucky i121 earbuds, charging case, decorative earrings, USB-C charging cable, and user manual, which are all included in the product package.
- Open Ear Earbuds x 2 (Left and Right)
- Charging Case x 1
- User Manual x 1
- Type-C Charging Cable x 1
- Detachable Decorative Earrings x 1 pair
Product Overview

The image shows the King Lucky i121 open-ear earbuds in purple, along with their matching charging case. The earbuds are designed to clip onto the ear, and a pair of detachable decorative earrings are also visible, highlighting the product's dual functionality as both audio device and accessory.
The King Lucky i121 earbuds feature an open-ear clip-on design for comfort and situational awareness. They come with a portable charging case and detachable decorative earrings, allowing for versatile use.
Setup
1. Charging the Earbuds and Case

This image illustrates the charging process and battery life of the King Lucky i121 earbuds. It shows the earbuds inside the charging case, with indicators for 2 hours for a fast charge, 6 hours of single-charge battery life, and 50 hours of total battery life with the case.
- Place the earbuds into the charging case. Ensure they are correctly seated.
- Connect the USB-C charging cable to the charging port on the case and a power source.
- The indicator lights on the case will show the charging status. A full charge for the case and earbuds typically takes approximately 2 hours.
- The earbuds provide up to 6 hours of playback on a single charge, with the charging case extending total playtime to approximately 50 hours.
2. Bluetooth Pairing

The image highlights the Bluetooth 5.4 technology integrated into the King Lucky i121 earbuds, indicating faster, smoother, and more reliable wireless connections. A stylized representation of the earbuds and a circuit board with "Bluetooth 5.4" text are shown.
- Open the charging case. The earbuds will automatically enter pairing mode.
- On your device (smartphone, tablet, etc.), enable Bluetooth and search for available devices.
- Select "King Lucky i121" from the list of devices.
- Once connected, you will hear an audible confirmation, and the indicator light on the earbuds will change.
- The earbuds utilize Bluetooth 5.4 for stable and low-latency connections.
3. Wearing the Earbuds and Attaching Earrings

This diagram illustrates the steps for wearing the King Lucky i121 earbuds and attaching the decorative earrings. It shows ensuring correct earbud placement (L for left, R for right), gently attaching the decorative piece to the ear hook, bending the soft part to fit the ear, and sliding it along the earring to secure it in a stable position.
- Ensure the earbuds are worn on the correct sides: L for left ear, R for right ear.
- To attach the decorative earrings, gently clip the earring onto the ear hook of the earbud. The design allows for easy attachment and removal.
- Open the soft part of the earbud's clip and gently attach it to your ear.
- Slide the earbud along the earring until it is secure and comfortable in a stable position.
- The open-ear design ensures comfort and allows you to remain aware of your surroundings.
Operating Instructions

This image displays the touch control functions for the King Lucky i121 earbuds. It shows various tap gestures (Tap x1, Tap x2, Tap x3, Long Press 2", Tap x5) and their corresponding actions, such as answering/ending calls, adjusting volume, playing/pausing music, activating Siri, game mode, skipping tracks, and factory reset.
The King Lucky i121 earbuds feature intuitive touch controls on each earbud. Refer to the table below for specific functions:
| Gesture | Function (Left Earbud) | Function (Right Earbud) |
|---|---|---|
| Tap x1 | Answer Call / Play/Pause Music | Answer Call / Play/Pause Music |
| Tap x2 | End Call / Volume Down | End Call / Volume Up |
| Tap x3 | Activate Voice Assistant (Siri) | Game Mode |
| Long Press 2" | Reject Call / Previous Track | Reject Call / Next Track |
| Tap x5 | Factory Reset | Factory Reset |
Maintenance
1. Cleaning
- Wipe the earbuds and charging case with a soft, dry, lint-free cloth.
- Do not use abrasive cleaners, alcohol, or chemical solvents.
- Ensure charging contacts are clean and free of debris.
2. Water Resistance (IPX5)

This image visually represents the IPX5 water resistance rating of the King Lucky i121 earbuds, showing water splashing around the earbuds to indicate their ability to withstand splashes and light rain.
- The earbuds are rated IPX5 water-resistant, meaning they can withstand sweat and light splashes of water.
- They are not designed for swimming, showering, or submersion in water.
- Ensure the earbuds are dry before placing them back into the charging case to prevent damage.
3. Storage
- Store the earbuds in their charging case when not in use to protect them and keep them charged.
- Store in a cool, dry place away from direct sunlight and extreme temperatures.
Troubleshooting
| Problem | Solution |
|---|---|
| Earbuds not pairing | Ensure earbuds are charged. Turn off and on Bluetooth on your device. Try a factory reset (Tap x5 on both earbuds). |
| No sound from one earbud | Check battery level of both earbuds. Try re-pairing. Perform a factory reset. |
| Low volume | Adjust volume on both your device and the earbuds. Ensure earbuds are worn correctly. |
| Earbuds not charging | Ensure the charging cable is securely connected. Check if the charging case has power. Clean the charging contacts on both earbuds and case. |
| Detachable earrings not fitting | Ensure you are clipping the earrings onto the designated ear hook area. Do not force them. |
Specifications
- Model: i121
- Bluetooth Version: 5.4
- Earbud Weight: Approximately 5.2g per earbud
- Water Resistance: IPX5
- Single Charge Playtime: Up to 6 hours
- Total Playtime (with charging case): Up to 50 hours
- Driver Size: 12mm (for immersive sound)
- Microphone: ENC Noise-Canceling Mics
- Charging Port: USB Type-C
- Package Dimensions: 4.72 x 3.86 x 1.34 inches
- Item Weight (Total): 3.2 ounces (approx. 0.09 Kilograms)
Warranty and Support
King Lucky offers a 100-Day Return Guarantee for this product. For any issues or inquiries not covered in this manual, please refer to the seller's support channels on the platform where the product was purchased. Keep your purchase receipt for warranty claims.





