The Sony MDR-XB70BT Extra Bass Wireless Wraparound In-Ear headphones bring an exhilarating music experience into your daily life. Enhanced with Sony's Extra Bass sound, their wireless connectivity, lightweight wraparound design and long battery life allow you to listen to music and take calls comfortably anywhere. Extra Bass Sony's Extra Bass sound delivers deep, low-end audio to give extra punch to all your music. Wireless Listening Bluetooth and NFC connectivity combined with a nine-hour battery life allow for all-day wireless listening. Read more… Comfortable Listening Lightweight and flexible wraparound design. Perfectly fitting around-your-neck, you'll feel weightless while listening to your music, whilst the cable remains safely close to you. For optimum comfort, choose from four different sizes of earpiece buds. In-Line Conversations The remote control allows you to take calls with the built-in mic and control your music playback without touching your smartphone.