Aqua-eegg, the wireless rechargeable smart pool water monitor, is developed based on advanced integrated circuit (IC) sensing technology. It can reliably monitor five key water indexes including pH level, Oxidation-Reduction Potential (ORP), Residue Chlorine, Total Dissolved Solid (TDS) and temperature in real-time. It can communicate with a smartphone through Bluetooth. It comes with features of small size, low power, less maintenance, and solar charger. It is ideal for water quality monitoring of Chlorine swimming pools and hot tubs.