True Wireless Earbuds with Charging Case U9
Main Advantages
Specification – U9
Please check the following specifications to choose a suitable headset model.
Model | U9 |
Bluetooth Chip | REALTEK RTL8763B |
Bluetooth Version | V5.0 |
Bluetooth Protocol | HSP/HFP/A2DP/AVRCP/AAC/SBC |
Earphone Battery | 50mAh |
Charge Warehouse Battery | 900mAh |
Working Voltage | 5V |
S/N | 98dB |
Frequency response | 20-20KHz |
Speaker Sensitivity | 94db±3db |
MIC | Silicon 4026 -42db±3db |
Music Time | about 5~6 hours |
Talk Time | about 4.5 hours |
Standby Time | 100 hours |
Charging Time | earphone 45 minutes |
Product Images
Bluetooth Earphone Factory from China
Immerse yourself in your world. Whether you’re tuned into music or taking calls, you’ve got no cords to hold you back. Dual Connect lets you use either earbud, or both, anytime you want, in stereo or mono mode.
The outstanding audio experience and cutting-edge features are offered by true wireless earbuds U9. when you tuned into music or taking calls. There are no cords to hold you back.

The TWS earbuds are crafted to provide natural, high-quality sound with 7mm dynamic drivers. Dual Connect lets you use either earbud or both anytime you want from U9 TWS earphones. The favorite artists sound incredible due to Pure Bass.
However you use them, you get up to 6 hours of power and an additional 21 hours via the included charging storage case.
High-capacity long endurance
Aluminum alloy charging cabin,light and suitable for long term wear. The compact charging cabin is easy to carry with you.


Touch manipulation easy to use
Touch operation is more casual, listen to music, adjust the volume, answer calls, hang up calls and touch them lightly.
Comfortable wear pressure-free
Texture fuselage, you wear a long time without burden inclined earphone design, with good noise isolation performance, and not easy to fall off.
Panoramic sound effect shock your hearing
It enhances the depth, presence, and space of the sound and presents the surroundings of the analysis. The stereo takes you personally to the scene and feel the shock of it.
Cool breathing lamp, let you know operation more clearly. Abandoning the bound headphone wires makes it possible to connect Bluetooth transmission in series.