Stable Wireless Connection: Reliable wireless connectivity with a control range up to 10 meters. Quiet Typing Environment: The numeric keypad uses a mute button to create a silent typing experience. Long Battery Life: Low power consumption, battery life up to 12 months. Efficient Design: 2.4GHz wireless connection, 18-key layout with backspace key for easy text correction. System Requirements: Compatible with Windows XP/Win7/Win8/Win10/IOS, with strong customization capabilities. Product Type: AJAZZ Wireless Numeric Keypad Product Model: AK18 Product Name: 2.4G Wireless Numeric Keypad Product Size: Approx. 89 x 129 x 27.5 mm / 3.5 x 5.1 x 1.1 in Weight: Approx. 100 g / 3.5 oz ± (5 g / 0.2 oz) (including weight) Battery Type: 1 x AAA battery (not included) Number of Keys: 18 keys Connection Method: RF 2.4GHz System Requirements: For Windows XP/Win7/Win8/Win10/IOS Package Includes: 1 x 2.4G Wireless Numeric Keypad 1 x Receiver 1 x User Manual Customers are our top priority. If you notice any issues with your product after receiving it, such as damage or incorrect quantity, please contact us immediately. We strive to provide you with the best post-purchase service.