Features:1. Reliable 2.4G wireless transmission: 10m open distance wireless transmission. Convenient, instant connection.2. The standard Micro USB cable (charge + data transfer) is connected to the keyboard port and automatically enters the fast charge mode. (Note: Keep the keyboard power switch on)3. The back is made of non-slip mats to maintain your desktop.4. Micro USB receiver plug and play without any drivers5. Simple storage compartment design, eliminating the trouble of receiver loss.6. The body is made of ABS plastic, with a delicate matte texture process. Feel delicate, comfortable and durable.7. Support for Microsoft / Android / iMac system.Specification:Model: 535Number of keys: 19 keysType: Wireless KeyboardInput: 3VWorking distance: 10mKey life: 10 million times or moreInterface: USBPlug and Play: SupportWaterproof: supportButton technology: crater architectureMaterial: ABSCharging time: 3-4 hoursStandby time: 60 daysSize: 15.5 * 8.8 * 2cm / 6.1 * 3.5 * 0.8inWeight: approx. 152gPackage list:1 * Keypad1 * USB Receiver1 * Data Cable1 * Manual.