The Airbuds Duo II Bluetooth True Wireless Earbuds Speaker offers precision dynamic sound in a sleek black color. With a battery capacity of 30 mAh for the earbud and 500 mAh for the case, these earbuds provide up to 30 hours of continuous use. Featuring auto pairing and magnetic snaps for easy storage, these earbuds also support stereo calling for high-quality audio during conversations. Compatible with both iOS and Android devices, this portable speaker system delivers a premium listening experience on the go.