Ultra Lightweight and Compatible for Small Ear: The surface and angle of A1 earbuds in-ear part have been polished and refined repeatedly to achieve a balance between beauty and comfort and make it comfortable to wear. a single earbud weight only 3.7g, making it as light as a feather and discreet in the ear. Stereo Sound Quality: A1 earbuds 6mm diameter speaker presents a powerful and wide sound range, which makes the treble full of dynamics, and the bass powerful. Smart Touch Control: A1 earbuds supports dual ear touch control, providing convenient operation on volume control, previous/next song, pause and answer calls along as well as voice assistant control. Long Battery Life: The earbuds lasts 6 hours for normal use (60% volume), and the charging bin lasts 24 hours for 3 charges, which gives you excellent experience of long endurance. Bluetooth 5.3 & 12m Long Distance Connection