Bluetooth-compatibility + 2.4G Wireless Dual Mode Numeric Keyboard with Touchpad Features: 2.4G wireless bluetooth-compatibility dual-mode, plug-and-play device, no driver required; perfect touch C-shaped charging port. Full-size keys make it easier to locate and press the number you're looking for, increasing speed and accuracy. The numeric keypad supports NumLock, Tab, Delete and more. There are shortcut keys to open the computer calculator directly. Quiet and soft to the touch, the ergonomic tilt provides extra comfort and helps reduce stress for those working with spreadsheets, accounting documents or financial applications. COMPATIBILITY - Works with PCs and desktop computers with Windows, iOS operating systems. Product Description: 1.Bluetooth-compatible + 2.4G dual-mode numeric keypad/keypad; one-touch switching for fast connection. 2.Automatic identification of Windows/IOS/Android/Mac OS system. 3.Multi-gesture large touchpad, left and right down key. 4.One key to open the computer calculator (Win). 5. Built-in polymer lithium 500mah. 6.Type-C, charging time about 2-3 hours. 7. Program: Nordic Bluetooth-compatible chip, touch original phase Specification: Model No.: BT14(Bluetooth-compatibility+2.4G dual mode) Material: ABS plastic Support system: Windows,iOS,Android,MacOS Number of keys: 22 keys Bluetooth-compatibility program: Nordic dual-mode (N51802 chip) Bluetooth-compatibility version: Bluetooth-compatibility 4.2 Keyboard life (keystrokes): 5 million times Response Speed: 30 ms Wireless/Bluetooth-compatible transmission distance: 10 meters Battery: 3.7V lithium battery, 303450-500mAh Operating voltage/current: 3.7V/typing <3mA, standby about 2.6mA, touch <10mA, hibernation <30uA Mouse return rate: 100 Usage time: about 133 hours of continuous typing, uninterrupted movement of the mouse > 40 hours Standby time: 18 months Color: black, iron gray Product size: 16.7x11.8x1.2(0.6) cm Package Included: 1*Numeric Keyboard(Others not included) Note: 1. Please allow 1-3mm error due to manual measurement. Please make sure you don't mind before ordering. 2. Please allow 1-3g weight error. Please make sure you don't mind before ordering. 3. 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 make sure you don't mind before ordering, thank you!