All-in-one hearing protection and entertainment. Noise-induced hearing loss is one of the most common risks people work in a noisy environment. Fortunately, it is easily preventable. That means choosing the right hearing protector before the project begins. That means a chainsaw is as quiet as normal conversation, keeping your ears safe and capable of appreciating great music. Headphones feature Bluetooth technology so these ear-protective headphones allow you to stream the entertainment of your choice from your smartphone or other mobile device, while providing ear protection in noisy environments. Features 1, NRR 25dB reduces eardrums’ exposure to loud sounds (ANSI S3.19 Certified). 2, Built-in Bluetooth for mobile talking and music listening. 4, Built-in antenna with high reception sensitivity. 5, Auto search and frequency scanning function. 6,20 radio station presets and memory. 7, The rechargeable battery lasts 8 hours or more when fully charged. Say goodbye to boring and noise from now on. Answer calls as you work with multifunctional button and built-in microphone – without having to remove the headset. Besides, auto-scanning helps you quickly find and save your favorite stations. Premium speakers provide bigger sound and deeper bass. ??????????????????????????????????????? &?????????????????????????????????? -? Powered by 1200mAh rechargeable lithium battery(included). Lightweight, low-profile design with soft, comfortable ear cushions and adjustable padded headband. ??????????????? -? The ear protection safety muffs can not only be used as working safety ear muffs but also great for hunting, mowing, racing, shooting, indoor gunfire, construction sites and other outdoor noisy environments to protect your hearing.