The $2 horn switch on the bolt has a ton of documented failures. You could buy several replacements at madvapes.com for cheap. I would buy a Silver Bullet if you want something that will probably outlast you.
+100
The Bolt is a knock-off of the Silver Bullet but, among other things, the SB uses a 200,000/1,000,000 cycle vandal resistant switch, modified to last >600,000 mechanical and 1,000,000 electrical cycles. I estimate I have at least 350,000 on mine so far and it still works and feels like new. I fully expect my Baby Bullet to outlast me, and my children if I had any.