I run, it runs, I stop, it runs What it it?

Answer: My watch.

More Difficult Riddles with answers

More Difficult Riddles

I scribble forms of the finest letter, And repel elements of the harshest weather. I am an arrow-aimer and a dust-breaker.
I tremble at each breath of air, and yet can heaviest burdens bear.
I was born of mire and muck; Of velvets and of rags. I bear your secrets and share your sweat, Lying patiently in wait. I've never sinned, but still I'm hated- Drowned, beaten, then hanged. But the work is never done; I'll rise again in seven days.
I work when I play and play when I work.
I'm a type of pizza that is folded in half before cooking to contain a filling
I’m a word, six letters long; I sometimes enter with a gong. All in order from A to Z, I start with the letter B. What is the word?
I'm flat. You use me everyday. You need me to live. But you give me away everyday. I'm coloured and I have a founding father on me. What am I?
I'm not man's best friend, I'm their enemy, I can mark your end, yet you do not see me, I am very small, but very tough, If you have me, then you have it rough.
I'm one of five, I'm not alive. The one who sent me forth became king, The one who received me died. What am I?
I'm tall in the morning and short in the noon. I disappear at night but I will be back soon.
I’m the most peculiar thing, I’m sure that we have met, Maladies to you I may bring, Time or health is my theft. I’m a lifelong friend; to the disdain of your kin, I come in all colors, mainly black and white, I can be innocent, quirky, a force, or a sin, Dare turn and kick me, and I’ll put up a fight.
If 4+2=26, 8+1=79 and 6+5=111. Then, what is 7+3?