Xinpengfa Big Button Business Calculator, Office Basic Desktop Calculator with 12 Digit Large Display, Mental Surface and Large Computer Key, Desk Solar Calculator

Large, Eye-angled, 12-digit Upright Display. Two-way Power: Solar and Battery (One AA battery included). On and Off buttons, Profit margin %, +/- , √, Key Rollover. Percussion keyboard ergonomic design, clear sound, after 100 thousand times of tapping test, not easy to bond. Easy to Carry, This Handheld Desktop Calculator, perfect choice for office and home.