???Premium Material?? Made of PU leather surface+acrylic inner case, dual protection for your device ???360-Degree Rotating Stand?? The 360-degree rotating stand provides a comfortable angle for viewing and typing ???Bluetooth Keyboard?? With a round key Bluetooth keyboard, the keyboard has long-lasting button life, durable to use ???Pencil Slot Design?? Built-in pencil slot design, place your pencil to avoid loss (pencil is not included) ???Four Corners Protection?? Enhanced protection with reinforced corners to safeguard your device from drops and impacts ???Built-in Touchpad??With a built-in touchpad function, it will offer a great aid when you do not have a mouse in hand Specifications: ?Model: YL13-A ?Effective Operating Distance: 10 meters ?Modulation Method: GFSK ?Operating Voltage: 3.7-4.0V ?Operating Current: