The improved S-pen allows you to be as creative as possible with your Galaxy Note 9 enabling you to get an ideal experience possible from your smart phone. Making it impossible to scratch your screen during use, the round end of the stylus allows you to use it without the fear of causing any damage to your smart phone. S-Pen remote function reaches up to 10 meters in an open space. Performance subject to circumstances. S-Pen battery life may vary based on usage. 30 minute measurement is based on average Bluetooth use. This is an official Samsung product & is made to the highest Standards of quality materials.