PENDULUMIC STANCE S1+ Wireless Headphones-Audiophile Sound With The Freedom Of Bluetooth 4.0 aptX (Over Ear Design, Amp, Phone Control, 30-hr. Battery Life) Enhanced Sound Profile for Deeper Bass and New Larger Ear Pads Wireless, Amplified, Wired, and Phone Control = Versatility 30 Hours Wireless Playback-Rechargable Internal Battery + AAA Backup CD-Quality Wireless Sound, BlueTooth 4.0 aptX, Easy Auto Pairing + Range up to 50ft Built-in phone control, stylish design, Top-Quality Accessories Over-Ear Design + 40mm driver, 10hz-24khz with aptX technology * Highest Rated Audiophile Quality Bluetooth Wireless Headphones with excellent sound profile, and better value than: SONY MDR-1RBT, BEATS STUDIO WIRELESS, PARROT ZIK, BEATS SOLO 2.0, PHILLIPS FIDELIO M1BT