1. Ultra-thin design Bluetooth numeric keypad is constructed of sturdy high-quality materials, durable, ergonomic tilt, comfortable typing and beautiful ultra-thin style appearance (only 0.31 lbs, 5.7x4.6x0.15 inches), perfect for Match your , /Pro, , PC, surface Pro, laptop or desktop as an external input numeric keypad 2. High-capacity rechargeable battery: Built-in 230mAh lithium rechargeable battery. The Bluetooth numeric keypad is recharged with the included USB cable, no need to change batteries. The Bluetooth wireless keyboard also has an automatic sleep function and lower power consumption, which reflects the energy saving and humanization of the product. Press any key to wake up the keyboard 3. Bluetooth technology provides wireless connection, an external 36-key full keyboard can expand your existing keyboard, and the operating distance is 10m. [Note: For laptops without Bluetooth function, you need to use a Bluetooth adapter (not included) to use] 4. Wide Compatibility: This Bluetooth wireless number keyboard includes shortcut keys and a silent scissor switch key, so you can work comfortably on your computer or laptop. Compatible with Windows, Android, . Pro, , , Surface Pro, Tablet pc,Desktop Laptop Applicable models: universal Type: numeric keypad Number of keys: 87 keys (keys) Connection with computer: Bluetooth Key Technology: X Architecture Colour:black Material:plastic Size:11.9 x 14.6 x 1.1cm Package Contents: 1 x keyboard 1 x data cable 1 x English manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.