XIANQI Solar Battery Dual Power Source: Solar powered and battery back-up make the desktop calculator keep working in low light conditions. Energy saving: Solar Function works in daytime or even in the dim light without battery Comfort-fit design: Ergonomic design comfortable button, wide keyboard with raised keys and increased pressure sensitivity Easy to carry: Handheld, perfect choice for office and home For the Crowd: Calculator is suitable for any businessman, worker, teacher, student or anybody that needs make any sort of calculation from time to time. Perfect for office, school or home use Package includes:1 x solar calculator Colour: white Product includes: 1pc Size: 120*80*6MM Notes Please allow 1-3cm error, due to manual measurement, please ensure you don't mind before bidding. Due to the difference between different monitors, the picture may not reflect the actual colour of the item. Thank you for your support