Speakers provide accurate and powerful bass while the passive radiator acts as a virtual speaker enhancing bass response. Connect your mobile phones, computers, tablets, iPod®s or any other Bluetooth® devices for a clear powerful sound. NFC one-touch pairing makes for easy setup. Get up to 12 hours of playtime. 3W/Class D amplifier with built-in radiator creates a powerful sound from a small portable speaker with easy one-touch NFC pairing. Built-in speakerphone allows for hands-free use.