The Coil Master 521 Tab Mini V2 is the new streamlined and compact edition of the trendsetting 521 Tab Elite, combining Coil Master's world class precision ohm metering technology that utilizes a heavy duty 510 connection and a bright easily visible screen. Featuring a high grade Stainless Steel 510 alongside a spring loaded Brass contact, the connection point is a main focus for the design, ensuring a durable and long lasting use. Precision ratings are extremely high, offering readings down to 0.05 ohms from 9.9 ohms, offering a level of feedback and accuracy that places the 521 Tab among the highest level in readouts. The 521 Tab Mini V2 utilizes a single, high amperage 18650 battery (sold separately) that is capable of being charged directly from the device, offering users superior battery life. A three way selector switch allows users to switch from off, to meter position, to a firing position capable of firing atomizers down to 0.1 ohms, giving users live feedback on resistance levels without having to screw and screw the atomizer between testing. Balancing affordability, portability, and functionality, Coil Master's 521 Tab Mini V2 is the essential ohm meter available today.