A unique tool to help any builder create the best and safest coils he or she can. A fully integrated digital ohm meter and volt meter provides accurate reading with just the flip of a switch. The Geek Vape 521 Tab reads all the way down to 0.01O and up to 9.9O. Along with the ohm reader, the 521 Tab also features a firing button to help avoid from switching back and for from ohm reader to mod. It's sleek and minimalistic design keeps simplicity in mind but also proves to be a fully functional accessory to any builder.