Feature:1. KEY CONDITION: Numeric keyboard adopts 28 independent keys, including Delete, Backspace key, input and correction is more convenient2. COMFORTABLE AND SIMPLE: The numeric keyboard has a low keypad design, comfortable keypad feel and simple keypad layout3. SAFE AND WATERPROOF: The USB numeric keyboard is designed to prevent splashing, which reduces the possibility of water and short circuit of the keyboard4. NEAT TYPING: The wired mini keyboard fits the shape of a finger and is suitable for touch typing. Chocolate key design, crisp, comfortable to type5. WIDELY COMPATIBLE: Small keypad numeric input bring independent operation, no conflict with the computer keyboard, compatible with a variety of operating systems, no need to install driversSpecification:Item Type: Numeric KeyboardMaterial: Aluminum alloyConnection Mode: Wired, BTNumber of Keys: 28 KeysBT: 3.0Support: USBApplicable Model: Almost any computer with USBCompatible: For iOS, for Android, for WindowsBuilt in Polymer Lithium Battery: 140mAh.Package List:1 x Numeric Keyboard1 x Charging Cable1 x User Manual