What level is my Scientific Calculator

How well do you know Callum's pice of shit calculator that needs smashing into the table in the middle of a exam to get it to work.

1 What colour is Callums Scientific Calculator?
2 Does it still have its cover slide?
3 How many Exams has it been though?
4 Which model Calculator is it?
5 How many stickers are on the front?
6 Which is the best way to get it to work?
7 Which Exam is the GOLD sticker from?