【Multi-Device Dual-Mode Design Wireless Keyboard】: Support Bluetooth V4.0,and 2.4G Dongle Wireless all in 1 Connection.Wireless keyboard With Function Lock Key Design. | 【Full Size and Ultra-Slim Cross-Compatible Keyboard】: With Convenient Number Pad: Compatible with Windows, iOS,Mac and Android OS, Recognize Operation System Automatically after paired, no pass code needed. | 【Space-Saving】:Support 3 Different HID Device (like mobile phone, laptop and PC) keep High speed connecting same time and shift on different devices easily,This Wireless Keyboard could use for 3 of your Devices at Same time,help you Save Space. | 【Low Power Consumption】: Bluetooth BLE enable keyboard ultra long working time ,the normal working time can be more than 1 year and space for two AAA batteries(Not Included) | 【Build-in USB dongle work with 2.4G frequency on PC】:The built-in 2.4GHz signal creates a disruption-free connection to your computer, which means you can work without delays when you’re typing. 10m or 33 feet range.