I am very new to vaping and even newer to this forum. I'm trying to figure out what type of ecig I have. Been reading forum all day, and everyone seems to know all the models and model numbers. When you refer to a 510, is it a model number or is it specific to one brand of ecig? I just got an ecig from elumacigs.com. Can anyone tell me what model it is? It has been working great for me. Nice throat hit and lots of vapor. I first bought Bluecigs and I am not very happy with their products or customer service. Poor battery life, no th, little vapor. I've learned a lot reading this forum, like I'm not the only one trying out different products, and that I need to stock up on supplies. I have already run out of carts and working atty after two weeks of vaping and had to resort to smoking UGH! analogs for a couple days while waiting for the snail-paced shipping of Bluecigs. eluma had very fast shpping, got my stuff in 2 days. Now I want to start dripping/dipping and refilling my own carts. Any ejuice recommendations?