The E2 Bluetooth Ear Protector is developed specifically for use in live-fire environments and offers top-tier hearing protection and advanced features, all while prioritizing comfort and convenience for extended wear. Bluetooth function enables the E2 headset to wirelessly connect to the phone for communication and audio playback, which can work with the noise-cancelling pick-up function at the same time without bothering each other. Also, it supports customizing your national flag or club logo on the ear cups.