BOW Folding Bluetooth Keyboard, Mini Wireless Keyboard for iOS iPad Air, iPad Mini, Android Mac Windows Tablets, iPhone, Built in Rechargeable Battery, Black Color Built-in US Broadcom Bluetooth module, up to 10 meters operating range. Faster, more stable and low energy consumption. Compatible 3 major operating system: iOS / Android / Windows. Works with most bluetooth supported devices and easily paired. Compact, portable and Lightweight, Can be folded and put into your pocket for anytime and anywhere use, perfect for travel. Ergonomic & Durable design: Aircraft-grade aluminum alloy texture for superior durability. Auto power off and sleep mode function helps to conserve battery. Built-in rechargeable lithium battery Provide 30-Day Money Back Guarantee, 12 Month Replacement Warranty and Lifetime Support Guarantee