Shokz OpenRun Pro 2 Bone Conduction Sports Headphones Shokz's groundbreaking acoustic improvement provides an immersive soundscape and plenty of base. Bone Conduction   - Handles all sounds for a clear, pure sound quality. Open-Ear   - Allows you to still hear everything around you. Prevents sweat from going in your ears. Wind Reduction   - Prevents wind noise, especially when taking a call. DualPitch Technology   - Reduces vibrations. Ergonomic Titanium Frame   - Doesn't shake around during movement, and provides a clamping, snug fit. IP55 Water Resistance   - Prevents damage from some water and sweat. Battery Life   - 1 hour of charging: 12 hours battery / 5-minute quick-charge: 2.5 hours of battery. MultiPoint Pairing   - Effortlessly switch between devices using Bluetooth. Weight   - 30.3g. For crystal clear sound without completely blocking out the environment around you, the OpenRun Pro 2 are the very first dual-driver flagship sports headphones. They use an all-metal bone conduction unit which delivers clearer high (piano, violin, etc...) and full-natural mids (human voices) for a pure, clear sound quality so that you can enjoy every beat and rhythm. Wind noise is reduced meaning people can still hear you even during windy conditions when you're taking a call. Alongside this, the headphones do not sit in your ears, meaning they are not covered, therefore stopping sweat from dripping into your ears, and ensuring your ears remain clean, and you stay comfortable. Using a unique air conduction driver and DualPitch technology, the bass coming from your headphones is delivered through the air, meaning less vibrations. The headphones are much more comfortable and provide situational awareness with their open-ear design, as they don't sit against your face. Engineered to stay on, even during the more intense workouts, the headphones have an ergonomic design, with a unique frame, that remains secure and comfortable, preventing slipping from occurring, and doesn't shake around during movement. With integrated titanium alloy memory wire, the headphones deliver a clamping force to keep things snug without causing discomfort. These headphones are ultra-lightweight and highly durable, with a soft, silicone finish, delivering you a cloud-like fit, you'll likely forget you're even wearing them. With a waterproof rating of IP55, the headphones are water-resistant, to protect against water splashes and is sweat resistant during extreme workouts or wet conditions. With a battery life of 12 hours, the OpenRun Pro 2 has improved performance compared to its predecessors and has a charging time of only 1 hour. A 5-minute quick charge with the included cable provides 2.5 hours of music. The headphones have MultiPoint pairing, so you can effortlessly switch between 2 devices without any hassle.