Thank you very much for viewing. This is a small, lightweight, and thin wireless numeric keypad that is easy to carry and convenient for laptops. It requires no wiring; simply plug the included 2.4GHz small receiver into your computer's USB port and it's ready to use. It's easy to use and keeps your desk tidy. The angled design makes it easy to type on. There is no power switch; the power turns off automatically if there is no operation for a certain period of time. It starts up immediately when you touch a key, making it easy to use. This wireless numeric keypad is great for calculators, keyboards, number keys, pads, Windows, and Mac. It is ideal for accounting, office work, desk work, and homework. ≪Specifications≫ ・Operating Range: Up to 10m ・Connection Method: Dedicated receiver included ・Power: 1 x AAA battery (※sold separately) ・Compatible OS: iOS, Windows 7, 8, 10, XP, Vista, etc. ・Size: Approximately 14cm x 8.6cm x 2.3cm We also sell mice separately. Please take advantage of our discounts for bulk purchases. ■Request ・If you experience an initial defect, please contact us before leaving a review. We will respond promptly.