Lectronic Earbuds PRO is an advanced and elegant earbud supporting long-duration calls and HD music experiences. The Earbuds PRO battery possesses a capacity of 30mAh. It has a single earphone use, free switch, and allows smart touch control and high sensitivity touching for music control-volume control- call control - voice assist. Its In-ear design is attractive, stable, and comfortable. It has the latest Bluetooth chip, 5.1, for a stable signal, with no delay.