Skullcandy Grind Bluetooth Wireless On-Ear Headphones with Built-In Mic and Remote, 12-Hour Rechargeable Battery, Supreme Sound Audio, Plush Ear Pillows for Comfort, Royal Blue All-day freedom: Grind Wireless lets you take more phone calls and rock late into the night with 12 hours of battery life and the wire-free wonderfulness of Bluetooth wireless streaming. All-day comfort: Premium materials like the solid metal headband, plush on-ear pillows and Supreme Sound audio make slipping into Grind Wireless a stupefyingly comfortable experience. All-day convenience: Life should be easy, so the built-in controls on Grind Wireless are dead simple. Play and pause music, answer and end calls, skip tracks and adjust volume with just three buttons. Supreme sound: 40mm audio drivers tuned with Skullcandy's Supreme Sound make all types of music sound equally impressive. Back-up aux cable: If you've transcended the need to sleep and your 12-hour battery needs charging, just plug in the included AUX cord with microphone and remote and never miss a beat. Battery fully recharges in just 2.5 hours.