PENDULUMIC STANCE S1 Wireless Headphone--Audiophile Sound With The Freedom Of Bluetooth 4.0 aptX (Over Ear Design, Amp, Phone Control, 30-hr. Battery Life) Wireless, Amplified, Wired, and Phone Control = Versatility+ 30 Hours Wireless PlaybackRechargable 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 * Astonishing Priceno other headphone offers all these features!