CALCULATOR NUMERIC KEYPAD FUNCTION 1. 2,4GHz Wireless: This wireless numeric keypad uses 2,4GHz wireless technology, which ensures stable transmission without delay, plug and play. 2. Solar Panel: This calculator numeric keypad has a solar panel. Powered by solar energy, this numeric keypad can only be used as a simple calculator. 3. Ergonomic Design: This wireless numeric keypad has an ergonomic design that provides comfortable control and is easy to carry. 4. 29 Keys: This wireless numeric keypad has 29 keys, suitable for laptops, banks, schools, businesses, etc. 5. Switch Mode: When using a wireless connection to your computer, you can use keyboard mode and calculator mode and switch using the PC/CAL key. Specification: Item Type: Calculator Numeric Keyboard Material: ABS Number of Keys: 29 Interface: USB Connection: 2.4G wireless network Button technology: X architecture Battery type: 2 x AAA alkaline battery (battery not included) Applies to Type: Universal List of packages: 1 x Calculator Number Pad1 x Receiver 1 x User ManualProduct Notes: Please allow a little manual errors.Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please confirm acceptance before ordering. About Shipping: Please ensure your shipping informations are correct to avoid delivery issues. All orders are shipped within 3 days after payment. Delivery usually takes 8–12 days, The specific delivery time is depend on circumstances. If you have any questions during your purchase, feel free to contact us. We will respond you within 24 hours.