I bought 2 of the kind with the soft covering on button and glad to see that but I figur the tried tho covering thing to aid in keeping
juice spills out. So either way seems ok but the old button is kinda hard to find sometimes.
Otherwise it's great. It's only 650 ohm so depends on your usage it will last and if you don't already know it does need to have charge in it to function as a Passthrough so the when it will no longer recharge it won't work as a Passthrough. On a side note I have wondered why we can't just get plug ins and eliminate the artery. If I remember something about the high drain capability of batteries compared to electricity from thw wall. But anyway. It's great for the price, not flimsy except the old style button. Actually I bought 3 and Sold one to my renter downstairs. Ultra mini coop. That was in Sept. I used exclusively the 2 untill I got the Vamo. Variable watt and bigger batteries really are more efficient. Had tobuy other stuff like good charger bigger drip tip. I read the my ego vv with the batter volt meter and it was vry same or extremely close to what it was set at. They still work. I'm using them to drip at ties so I don't have to take my
tank of all the time. 650 mah is a respectable size for decent time .my Vamo is not doing much better at all!