Kanger T3S. Bottom coil clearomizer which holds approximately 2.8mL of e-liquid. This is compatible with batteries which have an eGo-type thread along with a 510 connection.
Simple and easy to fill - unscrew bottom coil assembly, fill from the bottom, reassemble, done. Please make sure you wait a few minutes to let it soak.
To replace the atomizer - unscrew bottom coil assembly, unscrew coil, and screw the new one in. Reassemble, done.