From the manufacturer
Lenovo XT90 is a wireless Bluetooth earbud with various interesting features like low power consumption, fast connection, lower gameplay delay, high-speed transmission efficiency, picture synchronization, and clear audio, along with Bluetooth 5.0 chip. It has a 13mm dynamic speaker to allow you to enjoy surrounding 3D music.
Furthermore, it is equipped with smart touch and easy operation that lets you pause/play, switch the previous/next song, wake up the voice assistant, and answer/end/reject. It has got a wonderful in-ear design that fits properly in the auricle, and you can wear it for a long time. This earphone is IP54 waterproof and dustproof as well to meet the daily dustproof and waterproof requirements.
It supports other playback devices that connect with Bluetooth. When it comes to the earphone listening time, it offers 1.5 hours depending on the volume. The overall battery life of this earphone is 350 hours. You can charge this earphone in 1.5 hours, but you should charge the headphone three times as the headphone battery capacity is 35mAh/ 3.7V.