This is a must have for builders. This makes coil building much more pleasurable by being able to build, check ohms and fire it off with ease. No longer do I have the hassle of constantly taking it on and off a mod to build, then check ohms, adjust, fire it and such giving way to pre mature wear and tear of the 510 threads on both the Atty and Mod. Gives accurate readings give or take a couple of ohms
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I used to build my coils,rewick,etc. right on the mod and thought it was easy enough that i didn't need something like this.I finally decided to give the 521 Tab a try,and i wish i had gotten one a long time ago.These are a great way to do everything you need to do when building or maintaining your atties.It will show you resistance,you can pulse a new coil set up,you can dry burn and then rewick ,you can even use this device as a mod and vape with it.I also like that it uses a standard 18650,and you can recharge the battery right in the device.This is a very versatile little device that every vaper who builds should have in their work area.
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