In-Ear wireless Bluetooth Headphones with Headset Functionality. Advanced wireless sports earphones engineered for runners and gym-goers. Secure over-the-ear fit with flex-wire earhooks never falls out. Deep, enhanced bass for a high-energy workout experience. Sweat-resistant. Built-in microphone and controls for phone calls, volume, and media. Rechargeable battery provides up to 8 hours of talk/music playback time, Bluetooth 4.1, Includes protective carrying case and 4 sets of eartips. Specifications: driver size 8 mm, frequency response 20 Hz to 20 kHz. Cable length: 14.5 inches (37 cm), weight 0.5oz (16g). Color: Black.