[True Wireless Earbuds & Easy to Pair]- When you take out the bluetooth bass earbuds together from the charging box, they will automatically pair, then turn on your device Bluetooth to pair. No matter if you put your right or left earbud back in the charging case, the signal will not be disconnected, you can continue to enjoy the music.

[Hi-Fi Stereo Sound Quality & TWS Wireless Earbuds ]- APTX wireless stereo earbuds offer a truly natural, authentic sound and powerful bass. TWS Bluetooth Wireless Earbuds maximum transmission distance of 20 meters and have an unmatched combination of comfort and stability. When you long press the power button for 2 seconds, the wireless sport earbuds will enter into the transparent mode ,which you can listen outside voices clearly.

[100 Hours Playtime]-Bluetooth earbud itself is with built-in 60mAh mini battery, can provide 7 hours' play time. The charging box is with 2600mAh large capacity battery. If put earbuds into it when not use it, earbuds' playtime can reach 100 hours, standby time can reach 30 days.

[IP67 Waterproof & Wireless Sport Earbuds]- IP67 Waterproof and Dustproof, protects the earbuds from sweat or water, as well as dust. We offer 7 pairs of different sizes of silicone eartips, you can choose the one that suits you. When you are running, the earbuds are fit and will not fall.

[Ergonomic design & Widely Compatible]-Lots of ear shape data collection, thousands of real people's test, the radian adjustment precise to 0.05MM, the persistence in pursuit of perfectness. Ergonomic design makes you feel comfortable when you wear it for a long time. The Bluetooth earbuds for running are compatible with Bluetooth devices of android ios window system.