The H8 Emergency Badge is a small emergency calling badge designed based on Bluetooth Low Energy (BLE) 5.0. With the use of a form factor worn as a necklace-type lanyard, employees can always carry it around in hotels, schools, and nursing homes, and can simply send an emergency notification by pressing the front SOS button. It is IP65 rated waterproof, dustproof and ABS housing that can be used reliably in everyday indoor/quasi-industrial environments and can be intuitively checked for call status and connection status through the built-in buzzer and LED indicator.