H52 About this product: Multifunctional 34-key keypad with display calculator: This wireless numeric keypad functions as a Bluetooth keypad and also as a calculator with a display. Equipped with NumLock/ESC/Delete/pgup/pgdn/insert/00 keys, it allows one-touch switching between number input and calculation functions. Ideal for financial accountants, students, office workers, and spreadsheet specialists. Dual-mode connection (Bluetooth 5.0 & 2.4GHz): With two connection methods (Bluetooth 5.0 or 2.4GHz USB receiver), it can pair with up to two devices simultaneously and easily switch between them. A 34-key full keypad that expands your existing keyboard, creating a cordless environment. The communication distance is up to 10m. Stability & Ultra-thin design: The silent scissor-switch keys provide a comfortable typing feel and fast response. Maintains office silence and improves work efficiency. Made of high-strength ABS material for excellent durability, and the ergonomic tilt angle provides both typing comfort and a sophisticated appearance. Slim design (approximately 20mm thick) saves space. Wide compatibility: Compatible with Windows/iOS/Android/Mac/Chrome OS/Linux/Google OS. An external numeric keypad that aesthetically harmonizes with any device, such as MacBook Air/Pro, iMac, Surface Pro, smartphones, and desktop PCs. Requires 2 AAA batteries (sold separately) to operate.