Hearing is believing! That’s because with the Yamaha NX-B02 Bluetooth wireless stereo speaker, the sound quality is simply unbelievable – unless you hear it yourself. You’ll enjoy higher quality sound without having to connect a cable. Perfect with Bluetooth PCs, PDAs, and mobile phones. The Yamaha NX-B02 Bluetooth wireless stereo speaker features SR Bass (Swing Radiator) technology, which uses a "swing radiator" diaphragm that moves by the vibration of the main diaphragm and efficiently increases bass energy. This produces larger sound pressure levels for deeper and stronger bass sound. That means your music, games, and movies will sound more dynamic than ever. The Yamaha NX-B02 uses Bluetooth version 2.0+EDR (Enhanced Data Rate) and supports A2DP (Advanced Audio Distribution Profile), which allows the streaming of higher quality audio. For the very best in desktop audio, choose the Yamaha NX-B02 Bluetooth wireless stereo speaker – the sound quality is simply unbelievable!