User Manual: Lankey U-AIR4 Wireless Earbuds Bluetooth Headphones

Package Contents

• 1 x Charging Case
• 1 x Pair of Wireless Earbuds
• 1 x Type-C Charging Cable
• 3 x Pairs of Earplugs/Earfins (S, M, L)
• 1 x User Manual

Charging the Earbuds and Charging Case

1. Place the earbuds into the charging case, ensuring they are properly aligned with the charging contacts.
2. Close the charging case lid.
3. Connect the Type-C charging cable to the charging case and a power source (wall adapter, power bank, or computer).
4. The LED display on the charging case will show the charging progress. Once fully charged, the LED display will show 100% for both earbuds and the charging case.

Pairing the Earbuds with Your Device

1. Remove the earbuds from the charging case. They will automatically enter pairing mode and the LED indicator on the earbuds will flash blue and red.
2. On your Bluetooth-enabled device, navigate to the Bluetooth settings menu and enable Bluetooth.
3. Search for available Bluetooth devices and select "U-AIR4" from the list of devices.
4. Once connected, the LED indicator on the earbuds will stop flashing and remain solid blue.

Controlling the Earbuds

Troubleshooting Tips

1. If the earbuds do not automatically enter pairing mode, press and hold the touch control on either earbud for 5 seconds until the LED indicator flashes blue and red.
2. If the earbuds fail to connect to your device, ensure Bluetooth is enabled on your device and that the earbuds are within range (32 feet).
3. If you experience audio issues, such as poor sound quality or connection drops, try resetting the earbuds by placing them back in the charging case and removing them again to re-enter pairing mode.
4. If the earbuds do not fit comfortably or securely, try changing the earplugs/earfins to a different size (S, M, or L).

Frequently Asked Questions

How do I know when the earbuds and charging case are fully charged?

The LED display on the charging case will show the charging progress. Once fully charged, the LED display will show 100% for both earbuds and the charging case.

Can I use just one earbud at a time?

Yes, you can use a single earbud independently. When one earbud's battery is low, you can switch to the other earbud and charge the low one in the charging case.

What is the Bluetooth range of the earbuds?

The earbuds have a Bluetooth range of up to 32 feet, allowing you to move freely without losing connection.

Are the earbuds waterproof?

Yes, the earbuds have an IPX8 waterproof rating, which means they are protected against water and sweat. However, it is not recommended to submerge the earbuds or charging case in water.

Can I use the charging case to charge my phone?

Yes, the charging case can be used as a power bank to charge your phone in an emergency. Connect your phone to the USB-A port on the charging case using a compatible cable.

Q: Are these earbuds waterproof?
A: Yes, the earbuds are IPX8 waterproof and sweatproof.

Q: How long is the battery life for the earbuds and charging case?
A: The earbuds have a battery life of 5 hours on a single charge, and the charging case can extend it to 180 hours.

Q: Does the charging case have a LED display?
A: Yes, the charging case has an LED display that accurately displays the remaining power of the earbuds and charging case.

Q: What is the connectivity technology for these earbuds?
A: The earbuds use Bluetooth 5.1 for faster and more stable signal transmission within 32 feet.

Q: Are these earbuds compatible with iPhone XR?
A: Yes, they are compatible with iPhone XR and all mobile phones that have Bluetooth function.

Q: Can you purchase replacement silicone wingtips separately?
A: It is unclear if replacement silicone wingtips are sold separately.

Q: Can you use only one earbud at a time and leave the other in the case?
A: Yes, you can use one earbud at a time and leave the other in the case.

Q: Do these earbuds have noise cancellation or transparency mode?
A: No, these earbuds do not have noise cancellation or transparency mode.

Q: What is the warranty period for these earbuds?
A: The manufacturer offers a 180-day warranty period for any quality problems with the sports headphones.