The Apple Pencil has pressure sensitivity and angle detection, and was designed for low latency to enable smooth marking on the screen.[7][8] The Pencil and the user's fingers can be used simultaneously, while rejecting input from the user's palm.[9][10] One end of the device has a magnetically-fastened removable cap which covers a Lightning connector which is used for charging from an iPad's Lightning port. The initial charge lasts about 12 hours, but 15 seconds of charging provides sufficient power for 30 minutes of use.[11] The Pencil ships with a female-to-female Lightning adapter which allows it to be used with charging cables. It is compatible with iPad 6th generation, 7th generation etc. models.