The FHS3.7(W) intrinsically safe smart watch for mining is adapted from Huawei smart watch with customized system and services. It is suitable for harsh outdoor and underground working conditions with strict requirements for dustproof, shockproof and waterproof performance in high-risk workplaces such as coal mines, non-coal mines and chemical industry, realizing intelligent monitoring and management of occupational health of employees. Main Functions: It integrates multiple functions including heart rate monitoring, scientific sleep tracking, blood oxygen detection, cardiac health research, sleep apnea screening, exercise monitoring, information assistant, music playback, intelligent linkage, voice assistant, GPS, NFC, WLAN, fall detection & SOS emergency help, wireless charging, etc. It can also generate analytical reports on HRV health index and sleep quality. The watch features convenient carrying, simple operation and stable performance. A wristband version is also available as an option upon request.