DONAU TECH/K-DT2087-01 Calculator 8-Digit Root Function 180 x 90 x 19 mm Black / Calculator with 8-Digit Display / Battery Operated / Compact Design : Amazon.de: Stationery & Office Supplies
LOGILINK ID0200: Wireless keypad, Bluetooth, with calculator at reichelt elektronik
BLscale Digital Scale 'Calculus' Calculator | Donaulife