Cofan Noise Cancelling Headphones with Bluetooth Reduction Level (SNR): 29 dB Hearing Protection Microphone and Volume Control

[ Superior Hearing Protection] Reduces noise up to 29dB, protecting your ears in noisy environments. With a noise reduction level (SNR) of 29dB, these headphones are designed to protect hearing in very noisy environments. They are ideal for use in industry, construction, workshops and any other environment where noise may pose a risk to hearing health. [ Bluetooth 4.0 connectivity] It allows these headphones to be paired with any compatible device, such as smartphones, tablets or music players, up to a distance of 10 m. This makes it easy to listen to music or manage calls without the need for cables, improving mobility and ease of use. Built-in microphone and control: Answer calls, adjust the volume and switch songs directly from the headset. Compatible and versatile: 3.5 mm AUX input included for older devices and USB Type-C for fast charging. [ Long Life Battery] Enjoy 8 hours of continuous use with just 3.5 hours of charging. The charging indicator lets you know when it's time to recharge the headsets, avoiding interruptions during work.