The UE Ultimate Ears 984 000551 BOOM 2 Wireless Speaker delivers 360 degree sound through dual 1.75 inch drivers and dual passive radiators. Stream audio wireless from Bluetooth enabled devices from up to 100 feet away or connect devices to the 3.5 mm audio input. NFC technology makes pairing easy. Classic Phantom Black 2 tone color br br b PRODUCT HIGHLIGHTS b br br ul li Dual Drivers Dual Passive Radiators li li Bluetooth Audio Streaming li li NFC Technology li li Up to 100 feet Wireless Range li li 3.5mm Audio Input li li Waterproof and Shockproof li li IPX7 Waterproof Rating li li Speakerphone Function li li iOS Android App for Enhanced Functions li li Built In Rechargeable Battery li li Lasts up to 15 Hours on a Charge li ul