Feature: 1. KEY CONDITION: Numeric keyboard adopts 28 independent keys, including Delete, Backspace key, input and correction is more convenient 2. COMFORTABLE AND SIMPLE: The numeric keyboard has a low keypad design, comfortable keypad feel and simple keypad layout 3. SAFE AND WATERPROOF: The USB numeric keyboard is designed to prevent splashing, which reduces the possibility of water and short circuit of the keyboard 4. NEAT TYPING: The wired mini keyboard fits the shape of a finger and is suitable for touch typing. Chocolate key design, crisp, comfortable to type 5. 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 drivers Specification: Item Type: Numeric Keyboard Material: Aluminum alloy Connection Mode: Wired, BT Number of Keys: 28 Keys BT: 3.0 Support: USB Applicable Model: Almost any computer with USB Compatible: For iOS, for Android, for Windows Built in Polymer Lithium Battery: 140mAh. Package List: 1 x Numeric Keyboard1 x Charging Cable1 x User Manual