GeekVape 521 Tab Coil Master is the new device which designed to increase the degree of safety and avoid building a dangerous coil for the mod you are using.
Resistance Measuring Range: 0.01 – 9.9Ω
Lowest resistance rate: 0.1Ω
Connection : 510 elastic poles
Battery: Lithium 18650, 3.7V (Batteries are not included in the product)