Folding bluetooth keyboard

for IOS, Android & Window Usb charge Magnetic closure Rechargeable buit-in Lithium-ion battery with UP to 40 hours working tpme/30 days standby Operating range:Up to 32 feet(10M) Folding magnetic closure Rechargeable - Built-in Lithium-ion battery Working time: Up to 40 hours / Standby 30 days Connection range: Up to 32 feet (10 meters)