Experience high-quality sound without any wires with the Grado Labs GW100 Bluetooth Open-Back Headphones. Designed without any compromises, this headset features the same signature drivers that are found in Grado’s wired headphones. Connecting to your device via Bluetooth, the GW100 features its famous open-air design that audiophiles know and love. Maintaining the brand’s vintage-inspired look, the GW100 looks and feels like its wired predecessors – just without the wires. However, the headphones also come with a 3.5mm audio cable that you can use for a wired connection. In addition, the headphones provide a built-in microphone, allowing you to take or make phone calls with ease. Furthermore, the GW100 headphones offer 15 hours of battery life if you use it at 50% volume. To charge the wireless headphones, simply use the included micro USB cable.