Jaybird X4 Wireless Bluetooth Headphones for Sport, Fitness and Running, Compatible with iOS and Android Smartphones: Sweatproof and Waterproof - Storm Metallic/Glacier VG

Product highlights:

• Bluetooth 4.1 for wireless music listening and phone calls with compatible smartphones
• cord routing system helps secure the earbuds while you exercise
  • cord can wrap behind the ear or below it
  • designed to fit comfortably while wearing a bike helmet
• 3 sizes of silicone ear "fins" help further stabilize the earbuds
• IPX7 rated waterproof design
• 6mm dynamic drivers tuned to deliver high-energy sound with big bass
• free MySound app for Apple and Android lets you adjust settings and customize the sound using your phone
• three-button remote for controlling music playback and volume with a smartphone or portable music player
  • built-in microphone for making calls or voice commands with a smartphone
• built-in rechargeable battery offers 8 hours of listening
• includes 4 pairs of ear tips for a customized, comfortable fit
  • 2 sizes of angled silicone ear tips
  • 2 sizes of sport Comply foam tips
• cable management "cinch" clip helps you adjust fit
• pocket-sized carrying case
• USB charging cable included
• frequency response: 20-20,000 Hz
• impedance: 16 ohms
• weight: .51 ounces (without fins and tips)