Unlike the previous generation, the Japan Miki CRT-ES-4 Electric Assist Wheelchair (Enhanced Edition) increases the maximum weight capacity to 120 kg, further strengthening the power system and seat width, making it suitable for users with larger and heavier body types. CRT-ES-4 is currently the only model on the market that adopts a uniquely developed Smart Handle Control system. Inspired by the natural hand movements of daily wheelchair use, it allows caregivers to start using it with ease. The Smart Handle Control detects the caregiver’s hand movements, direction, and force in real time, providing assistance when going uphill and resistance when going downhill, offering an intuitive experience. It is especially suitable for elderly caregivers, truly combining usability and ease of use. To meet the needs of the rental and caregiving markets, the enhanced edition continues the Japanese manufacturer’s standards for durability and maintenance: equipped with detachable front wheels, seat/back cushions, and base cushions for high-temperature disinfection; adjustable armrests, footrests, and backrest tension to accommodate different body types; and finished with anodized coating and made with 7003 aerospace-grade aluminum alloy, significantly improving scratch and wear resistance, showcasing the spirit of Japanese craftsmanship.