Shokz OpenFit 2+ Open-Ear Headphones Grey. The open-ear style maximizes environmental awareness and physical button controls to reduce unwanted tap control mistakes. Sporting DualBoost driver technology with OpenBass and DirectPitch 2.0 the OpenFit 2+ earbuds deliver natural balanced audio with maximum impact while avoiding unwanted sound leakage. Golden Fit Golden Sound Inspired by the perfect dimensions of the golden spiral OpenFit 2+'s flexible earhook is optimized to ensure a secure fit. The integrated Ni-Ti alloy molds to the contours of your ear for a personalized comfortable fit from workouts to everyday wear. At just 0.33 oz each OpenFit 2+ is incredibly lightweight keeping your ears fatigue free. Crafted with an inner layer of Shokz ultrasoft Silicone 2.0 these earbuds provide a comfortable natural fit that seamlessly blends into your everyday life. The OpenFit 2+ include a wireless charging case and a USB-C charging cable. Boost Your Sound with DualBoost Enjoy vibrant and dynamic audio that sounds larger than life with Shokz DualBoost a technology that combines two independent drivers separating and processing low and high-frequency sounds for a refined musical experience. Specifications for Shokz OpenFit 2+ Open-Ear Headphones: Manufacturer: Shokz Headset Type: Fixed Battery Type: Lithium Ion Features of Shokz OpenFit 2+ Open-Ear Headphones Deep powerful bass and clear bright mids and highs for a balanced natural sound profile Precision-engineered perforations and rear tuning holes minimize sound leakage and optimize resonance frequency 11 x 21mm low-frequency driver with custom composite diaphragm and high-performance polymer surround Inner dome-shaped cap of woofer is crafted with strong lightweight PEN material for clarity and directionality 16.7percent larger low-end driver than previous generations Independent high-frequency driver for crisp and detailed sound Package Contents: Shokz OpenFit 2+ Open-Ear Headphones Case Charging Cord Shokz T921-ST-GY-US: OpenFit 2+ Open-Ear Headphones Grey