Wireless Bluetooth 5.3 Connectivity Featuring advanced Bluetooth 5.3 technology, these headphones deliver a stable and fast connection with low latency. Bone Conduction Technology Unlike traditional in-ear headphones, these bone conduction headphones transmit sound through your cheekbones, keeping your ears open to ambient noise for safer outdoor activities like running, cycling, and hiking. Comfortable Ergonomic DesignLightweight and ergonomically designed for all-day wear without discomfort, ensuring a secure fit even during intense workouts or running. Clear Hands-Free CallsIntegrated microphone ensures crystal-clear communication, with automatic stereo-mono switching for a natural calling experience. Waterproof DesignEnjoy your music in various weather conditions, protected by the earbuds' waterproof construction. Specifications: Material: PVC, ABS, silicone Battery capacity: 240mAh Battery life: 15 hours Bluetooth version: 5.3 Impedance: 32 Frequency response range: 20 - 20000 Hz Sensitivity: 30 dB Package included: 1 x Headphones 1 x Charging Cable 1 x Storage Pouch 1 x English and Chinese Manual