Wicked Audio Speaker, Ear Buds & Headphones Bundle Reverb - Headphones: Lightweight 7.2oz/ 40mm Driver/ 64OHMS/ 107db/ 20-20,000HZ/ 4ft cabel/ Gold plated plug Deuce - Earbuds: 10mm Driver / 103db / 16OHMS / 20-20,000HZ / 4ft Cord Length Mini Speaker: 40mm Driver / 80db / 200HZ-18KHZ / 4OHMS / 4-6 Hour Battery Life / 32.5in. USB Cord / 4ft. Aux Cord Mini Speaker can be used portable with batteries or plug it in for extended use.