Easy-to-read large 12 digits display reduces eye strain, preventing errors. Colorful design for your preference and decorate your space. Two power sources, solar and battery to extend usage time. Durable construction and comfortable plastic keys for easy operation. Humanized design with tilted display for ergonomic comfort and to ensure optimum readability. GT function, automatically calculates the total sum of amounts generated. Perfect choice for school, office and home or as a gift.