Uwell HAVOK V1 Pod, made of dark translucent PCTG, has 4ml capacity with sliding top filling design. Havok V1 can adjust airflow by sliding up or down the contraption(sliding up to increase the airflow, sliding down to decrease the airflow). Uwell Havok V1 cartridge has 0.25Ω UN2 Meshed-H DTL coil; 0.6Ω UN2 Meshed-H MTL/RDL coil. Both of them adopts Pro-FOCS flavor testing technology for excellent vape. Its drip tip is a non-removable sort and is about the same size as a 510.