Wireless Ultra Slim Bluetooth Keyboard for iPad, iPhone, Android, Windows ,Compact Rechargeable, Black (KB10KA-R) Bluetooth 3.0 easy wireless and fast connection for operation. Up to 10m operating distance Ultra-Slim Nice Touch Design with 83 keys, including F key functions. Designed for Apple / ipad / iphone / MAC OS / Android / PC - Microsoft Windows 10 Hassle Free Rechargable USB PC with provided USB Cable - no battery needed. Over 140 long working hours and just 3 hours charging time