specially designed for everyday use, the wireless headphones give you a sense of freedom while working or training. Connect Sponge Free headphones to your device via Bluetooth and play your favorite music up to 9 meters away from your device. When the headphones are fully charged, the music will play for up to 6 hours. Answer calls and control your playlist with buttons on the headphones. Press the button to access Amazon Alexa, Siri or Google Assistant.