This is new update type cover compatible Surface Pro 3 and Surface Pro 4
LED Backlit - 7 optional backlit colors and each color has 2 gears adjustable brightness, which will make your typing cooler and help you type freely even in the dark.
Bluetooth performance - Using Bluetooth 3.0 technology that provides high speed connection and signal distance up to 33ft (10m).
Battery - Built-in 750mAh rechargeable lithium battery, works for 125 hours continuous use with backlit off (3 hours with backlit on) or 90 days in standby mode, less than 4 hours charging time.
Surface Fit Design - This keyboard features its magnetic fold so you can adjust it to the right angle when using with your surface pro 3, 4 or 5(new surface pro 2017), also compatible with android and windows devices.

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 9.69 inch
Height : 0.91 inch
Length : 13.7 inch

Item Weight: 14.08 ounce (View shipping rates and policies)
Shipping Weight: 1.2 pounds (View shipping rates and policies)

ASIN : B012MZJ64Q