Please check below FQA to learn more details. If you have any other questions, please don’t hesitate to message me on Amazon

Q1.How to charge the wireless earbuds?

F9 wireless earbuds come with a charging cable. No charging adapter is included. You could connect your phone’s charging adapter with charging cable to charge the wireless headphones.

Q2.Why can’t the Bluetooth headphones be paired with the mobile phone?

1)Please use the wireless bluetooth earbuds in a place with good signal.

2)Delete the Bluetooth name on the mobile device, turn on the Bluetooth of the mobile phone again, take out the wireless earbuds, and re-pair.

3)Try to connect with another mobile device.

Q3.How to adjust the volume of wireless earbuds?

1) It is recommended to adjust the volume of the headset on the mobile device, which is more convenient and clear.

2) If the earphone volume is very low, it is recommended to change the song test volume.

3) The volume of the earphone is related to the surrounding environment. Hope you can understand.

Q: How do you feel the quality of the sound?

A: F9 brings a highly restored real voice. The call is as clear as face-to-face. Moreover, the intelligent noise reduction will help you devote yourself to the music even in a noisy environment.

Specification:

Product model: F9-5C

Version: V5.0 Noise reduction.

Version: CVC8.0

Operation: Touch Headphones

Waterproof: IPX7 waterproof

Connection method: single/double free to use

Package List:

2 * Earbuds

1 * Charging Case

1 * Charging Cable

3 * Earcaps

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【Bluetooth 5.1 Technology& Easy Pairing】Adopting the most advanced Bluetooth 5. 0 technology. Pick up two headsets from charging case and they will pair to each other automatically, then only one step easily enter mobile phone Bluetooth setting to pair the earbuds, which provides in-call stereo sound. Also own fast and stable transmission without tangling.
【Touch Control&Smart LED Digital Display】 Features with touch control sensors, Headset can largely minimize the pressure to your ears when you touch the button for various functions. In Wireless Charging case, the smart LED digital screen can check battery consumption display anytime.
【comfortable Wearing, Premium Fidelity Stereo Sound Quality】wireless earbuds are designed of curved in-ear by silicone earhooks, holding wireless Bluetooth headphones in place even during active movements.Offers a Truly Natural, Authentic Sound and Powerful Bass Performance with 10mm Large Size Speaker Driver- the drive area is 2.77 times than the normal drive area.
【IPX7 waterproof】 Earbuds and charging case inner Nano-coating makes it possible to waterproof for 1 meters deep for 30 minutes. It is suitable for sports to prevent water. Ideal for sweating it out at the gym . Even Wash the earbuds and base.
【Charge on the go】 Playtime lasts for over 6 hours from single charge and total 28 hours with charging case. Enjoy fast charging, to fully charge the rechargerable case only 1.5 hours via fast charge USB-C cable or less than 2 hours via wireless charger. Providing convenient charging way with no strings attached.