The Onnix 2 15W Kit comes with OX DVC Coil 0.8ohm & 1.0ohm, and Onnix 20W Kit is equipped with OX Mesh Coil 0.5ohm & OX DVC Coil 1.0ohm. But these four types of vape coils can be compatible with both Onnix 20W and Onnix 2 15W Kit.

Can you find any differences and similarities between Onnix 20W and Onnix 2 15W Kit?
Here are the main features of the Onnix 2 15W Kit:
FM SaltCoilTech 3.0 - OX DVC Coil
100% Flavor Categories Compatible
Draw Activated or Button Activated
Real 900mAh Internal Battery, Type-C USB Port and 2A Fast Charging
2ml E-liquid Capacity, Refill at Ease
Stylish Panel Options
Upgraded Light Indicators
OX Platform
Here are the main features of Onnix 20W Kit:
Dual Airflow Mechanism for RDL & MTL Vaping Needs
3-level Adjustable Power Output
Draw Activated or Button Activated
Real 1100mAh Internal Battery, Type-C USB Port, and 1.5A Fast Charging
3.5ml (2ml TPD) E-liquid Capacity, Refill at Ease
100% Flavor Categories Compatible
For more information about Freemax Onnix 20W Kit, please click here>> https://www.freemaxvape.com/onnix-20w-kit