are in-ear electronic hearing protectors that suppress hazardous noise above 82dB and improve situational awareness and communication in harsh environments. Bluetooth connection function can connectdevices in a state of noise reduction, freely listen to music, answer calls or reject calls, share communication and entertainment diversity. Also can last for 8 hours when fully charged, with voice prompts and low battery prompts. Smaller size and lighter weight Compared with traditional headphones. Combines compatibility,portability and comfort.