AfterShokz - Aeropex Wireless Bone Conduction Open-Ear Headphones: KEY FEATURES: Rechargeable Battery IP67 water- and dust-resistant design Built-In microphone Bluetooth 5.0 interface Carrying case included 20Hz – 20kHz frequency response 8.5 ohms impedance 105dB Sensitivity Stereo design PRODUCT OVERVIEW: Listen to your audio content comfortably with these contemporary Aftershokz Aeropex headphones. The open ear design and bone conduction technology lets you hear external sounds, such as traffic, during use, and the Enhanced Audio feature ensures deeper bass and less vibration. These Aftershokz Aeropex headphones are lightweight for comfortable all-day use and can be used during workouts and runs in the rain with an IP67 waterproof rating. SPECS: Connection Type: Wireless Wireless Connectivity: Bluetooth True Wireless: No Maximum Wireless Range: 33 Feet Water Resistant: Yes Built-In Microphone: Yes Battery Life: 8 hours Battery Charge Time: 2 hours Water Resistant: Yes BOX CONTENTS: Aftershokz Aeropex Wireless Bone Conduction Open-Ear Headphone Carrying Case