Prototype Radiation Alert Watch -- 2

I need a wrist-worn prototype that continuously samples ambient radiation and instantly warns the wearer whenever levels reach a hazardous threshold. The core goal is real-time safety, so reliability and fast response are critical... (Budget: ₹1500 - ₹12500 INR, Jobs: Arduino, Electrical Engineering, Electronics, Embedded Systems, Firmware Development, PCB Design and Layout, PCB Layout, Product Design)