ADX Fusion V3, Aluminium Stereo Bluetooth V4.0 Speaker with NFC pairing and Up to 20hr playtime - Silver. High power speaker with dual bass diaphragms. Compatible with all Apple, Android, Windows devices. Completely designed and developed in the UK and fully compatible with our App "ADX Player" available for free from the Apple App Store - Featuring completely redesigned electronics for improved noise reduction, sound quality and Bluetooth version 4.0 with NFC pairing from CSR; provides high energy efficiency, reliable connection and ultra fast Bluetooth pairing, now with a 15mtr (48ft) range. The ADX Player App features for gesture control and specially produced EQ curves. 10 watt digital amplifier ensures lots of power to suit all occasions from working in the office to having a party with friends New: Now featuring a higher capacity 3.7 volt - 3000mah lithium battery up to 20hrs playtime New: The Fusion V3 contains 2 high quality 50mm 16core Kevlar transducers with Neodymium magnets and are not only are more powerful then ferrite magnets, offering better transient response but they also take up less room inside the speakers enclosure which means the speaker has more internal volume and the weight of the unit is reduced by almost 100grams UNRIVALLED FEATURES AT THIS PRICE: 20hrs battery life, Bluetooth 4.0 with NFC and 45 ft range, 10watts RMS power, Aluminium enclosure, Kevlar drivers, 55z - 19Khz frequency response. Patented design!