Deli 2135 Computer Keyboard Calculator Big Button Bank Office Finance Accounting Solar Calculator(White) Computer Cables & Connectors Use battery: built-in 18650 lithium

Use battery: built-in 18650 lithium battery

Standard color coded wires for an easier installation

it is recommended to measure several times in different battery slots

Support input: AUX/USB

compact structure and stylish design

Deli 2135 Computer Keyboard Calculator Big Button Bank Office Finance Accounting Solar Calculator(White) Computer Cables & Connectors Use battery: built-in 18650 lithium1. Material: plastic 2. Power supply: battery (including a 1. 5V button battery) + solar 3. Display digits: 12 digits 4. Computer keyboard design, concave key surface, stable feel 5. Large plus key, high travel light touch conductive adhesive, easy and accurate key press 6. Clear large screen display, easy and convenient operation 7. Memory storage function, easy to retrieve data 8. Size: about 19x15. 4x4. 3 cm