· [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.· [32 Preset Modes with TOZO App] Connecting to the TOZO app offers access to extra features, which tailoring the sound output to suit your personal preferences. Whether you prefer stronger bass or more balanced sound, these earbuds give you the flexibility to follow your fine-tuned audio.· [Long Battery Life] With headphone 40mAh capacity and charging bin 400mAh capacity. The earbuds lasts 7 hours for normal use, and the charging bin after fully charged via USB A to USB C charging cable, which can enjoy extending 32 hours of playtime, equivalent to listening to 480 songs without missing a beat.· [Charge and Data Transfer] You can easily charge or sync your USB-C device to a charger or laptop with a USB-A port to charge or transfer data via USB 2.0.· [Long-lasting Durability] The TOZO 15W (5V/3A) Type C charger cable is made of soft silicone material to ensure exceptional resistance to wear and tear. Whether it's twisting, pulling or frequent plugging and unplugging, this cable will withstand the test of time.