iSound iGlow Sound Tower Water Resistant Glowing Speaker with Big Stereo Sound, Black Water-resistant glowing durable speaker with big stereo sound! • Five multi-colored LED themes • NFC compatible • IPX4 rating – water-resistant • Speakerphone with noise-free speakerphone • Volume, music and light controls • Bluetooth v4.0 with up to 100-foot transmission range • Mobile hands-free • Rubberized finish • Connect wirelessly or via 3.5mm AUX cable • Gravity Sensor auto-adjusts LEDs when used horizontally or vertically • Driver size: 45mm (2) + 1 passive subwoofer • Output power: 3.5W (2) • Battery: 2600mAh • Impedance: 4Ω