The FREECROSS is a Bluetooth headset for athletes with a dynamic streamline design which is inspired by aerodynamics and the consistence of the jaw line. The flexible neckband and ergonomic articulating in-ear design ensures a comfortable wear with a secure fit and a simple operation during all sort of activities. The integrated amplifier and professional tuning of the bass unit delivers heart-pounding bass to energize your workouts in doors, or out. Constructed with selected premium materials ensure excellent comfort and extra durability. FREECROSS is designed to be sweat-resistant and waterproof which makes it robust and durable.