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 drivers 5、Simple storage compartment design, eliminating the trouble of receiver loss. 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. 5. 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: 535 Number of keys: 19 keys Type: Wireless Keyboard Input: 3V Working distance: 10m Key life: 10 million times or more Interface: USB Waterproof: support Button technology: crater architecture Material: ABS Charging time: 3-4 hours Standby time: 60 days Size: 15.5 * 8.8 * 2cm / 6.1 * 3.5 * 0.8in Weight: approx. 152g Package list: 1 * Keypad 1 * USB Receiver 1 * Data Cable 1 * Manual