how do i master reset my gearfit 2 password, that i dont not know the current pin?

[AC Question]

my friend gave me his old gearfit 2 watch however he lent it to a friend of his who put a pin on it, they no longer are in contact so he cant contact him to ask for the pin and i am currently stuck with a device i cant use due to not having the pin to unlock it....i need help in unlocking my device i do not care about losing data currently on the device, please just help me to get into this thing so i can actually use this darn thing!!!!