Diabetes mellitus claims a large number of lives each year. It influences the body in different ways by prompting numerous genuine sicknesses and untimely mortality. The developing enthusiasm for wearable innovation has prompted expanded research e orts toward the improvement of non-invasive glucose estimating technique. Generally, customary techniques are utilized to measure glucose content in the circulatory system which is agonizing and makes trouble and disturbance the patient. The ability of systems to screen glucose non-intrusively demonstrates an alluring course towards advancing the administration of diabetes and accomplishing improved glycemic control. The Wireless Body area networks (WBAN) is acquiring prevalence as wearable gadgets spring into the market. The aim of this research work is to mark an instantaneous non-invasive small, compact and minimal effort gadget to decide glucose by the optical sensor with energy harvesting which makes it totally versatile. In the proposed work a wearable sensor with Bluetooth low energy transmission and solar energy harvesting transmits, demonstrates long-term continuous glucose monitoring based on the node is possible provided, the proposed device stays outside for a short period of time in a day. © 2019 IEEE.