Bluetooth Ear Protection Noise Canceling Hearing Protection

Brand New with complete box. Excellent Microphones - Built-in 2 microphones are used to sense changes in the external environment. In the sound amplification mode, it can amplify the low frequency sound up to 3 times, which is very suitable for wooworkers gardener or worker who need to communicate at work while protect there ears(NRR 22dB) Bluetooth 5.4 Technology - Using a Bluetooth 5.4 chip made by American company, it has a faster and more stable connection. Stream music and make calls let your job easier and interesting Long Battery Life - Listen to music in Bluetooth mode up to 48 hours, sound amplification mode (BT OFF) hearing protecter can be used for 100 hours. And allows you to connect to MP3, mobile phone and more devices via AUX jack.(ALL MODE NEED 2AAA BATTERIES-not included)