Ergonomic Foldable Keyboard: ProtoArc foldable bluetooth keyboard is featured with ultra-slim, 360° foldable and ergonomic split design. A portable bluetooth keyboard perfect for travel and business trips. Great for use on the airplanes, libraries, cafes or wherever on the go. | Split Keyset Design: The ergonomic foldable keyboard features with unique V-shape with 166 degrees angle and split keyset design, helps to create a natural typing position and minimizes pressure on your hands and wrists. Unlike a traditional keyboard, adjusting to an ergonomic keyboard may require an initial adaptation period as you become accustomed to its design and layout. | Ultra Slim & 360° Foldable: The ultra-thin, portable bluetooth keyboard can be easily folded and put into your backpack or briefcase to carry around. Strong magnetic adsorption design avoids accidental opening in your backpack. Delicate leather appearance perfectly match your iPad, tablet or laptop. | Switch up to 3 Devices: The ergonomic foldable keyboard can be connected up to 3 bluetooth devices simultaneously and easy switch between them, which is a perfect solution for people who need to work on multiple devices. Compatible with iOS, Android, Windows and Mac OS, this folding keyboard works well with iPad, iPhone, tablets, cellphones, laptops or PC. | Type-C Rechargeable: The foldable keyboard is built-in lithium battery with 250 hours standby time, one full charge can last enough for your short business trip or vacation. Conveniently to power on or off the keyboard by just unfolding and folding.