3 Devices Switch with A Single Clicking: This keyboard is able to connect to 3 devices at the same time. You can switch between 3 devices with a single key clicking. Ergonomic design: Stainless steel material gives heavy duty feeling, low-profile keys, full size keys, arrow keys, number pad, shortcuts offer quiet and comfortable typing. Broad Compatibility: Use with all four major operating systems supporting Bluetooth (iOS, Android, Mac OS and Windows), including Computer, Desktop, PC, Laptop / iPad Pro, iPad Air, iPad, iPad Min, iPhone, Smartphone / Android Tablets like Samsung Galaxy, Surface etc. 6-Month Battery Life: Rechargeable lithium battery with an industry-high capacity lasts for 6 months with single charge (based on 2 hours non-stop use per day). Package contents: Arteck Stainless Bluetooth Keyboard, USB charging cable, welcome guide, our 24-month warranty and friendly customer service.