Creative Muvo 10 Portable Wireless Bluetooth Speaker with NFC (Black) Tap & Play NFC technology for fuss-free and easy usage 3" full-range drivers in acoustic enclosure, delivers surprisingly loud audio Advanced dual-flared bass port tube for clean, high output bass Built-in rechargeable battery with more than 8 hours of playtime on a single charge Built-in microphone intuitively switches from music to phone conversation and back again