In an era of increasing mobility and technological reliance, individuals face the dual challenge of staying hydrated and ensuring their devices remain powered throughout the day. This project introduces an innovative Smart Tumbler, a multifunctional solution that integrates a reusable tumbler with a detachable power bank. Designed for students, professionals, travelers, and riders, this product addresses the inconvenience of carrying multiple essential items while promoting sustainability. By combining hydration with on-the-go charging, the Smart Tumbler enhances user convenience, reduces clutter, and aligns with the growing demand for eco-friendly products. The design incorporates features such as an anti-slip base, leak-proof technology, and temperature retention to cater to diverse user needs. The commercialization potential of this product is significant, targeting a broad consumer market that values both functionality and sustainability. Collaborations with leading tumbler and power bank manufacturers can further enhance its market appeal. Despite challenges such as material selection, heat management, and waterproofing of electronic components, this project aims to deliver a stylish, durable, and practical solution that improves daily efficiency. By fostering a seamless blend of hydration and portable charging, the Smart Tumbler represents a forward-thinking approach to modern lifestyle needs.