Open Ear Technology: Leaves ear canal left open providing situational awareness and no damage to eardrumsLightweight and Fitted: Weighs just 35g and is made of titanium and silicone. Snug fit keeps them attached during any demanding usage.Head Movement Controls: Offers you handsfree usage letting you answer and hang up calls and control playback of your music.Enhanced LED Lights: Bright LED lights offer different modes for running and cycling.Water & Dustproof: IP67 rating allows for use in all weather conditions. Also is sweat proof and showerproof.Battery Life: Up to 12 hours of music playback and can run for up to 3 hours with just a 5-minute charge. Can be fully charged in 1 hour.Wing 2 Power Bank: The included power bank extends your battery life up to 24 hours and includes a power level indicator.