Superior Sound with Rich Detail Open-Ear Noise Reduction Secure Fit and All-Day Comfort Up to 50 Hours and Wireless Charging Audio Technology Shokz SuperBoost(TM)+ DirectPitch(TM) Technology+ Optimized for Dolby Atmos+ Open-Ear Noise Reduction Battery LifeNoise Reduction Disabled: 12 Hours (50 Hours with Charging Case)Noise Reduction Enabled: 6 Hours (24 Hours with Charging Case) Quick Charge10-Min = 4 Hours of Usage Charging PortCharging Case: USB-C & Wireless Charging Sweat & Water ResistantIP55 Sweatproof WeightEarbuds: 12.3 g 0.2 gCharging Case: 74.8 g 2 g