In-ear sport headphones with ergonomic Freebit ear fins for maximum stability and comfort. Ideal for active use (jogging, working out, etc.). Bluetooth wireless technology with mic and touch-sensor control built into the earpiece for convenient handling of calls, music playback and volume adjustment. Lab tested and certified IPX5 waterproof rating allows headphones to be washed after use. 5,8 mm drivers deliver powerful sound. Switchable hear-through function enables ambient noise to be heard through headphones for safer use outdoors. Internal battery provides 3,5 hours of continuous use on a full charge. Portable charging case allows you to charge the headphones 4 times (17,5 hours total) without connecting to an AC power source. Quick charge function gives you 45 minutes of playback from a 10-minute charge. Supports the Audio-Technica Connect app for convenient control of headphone settings.