The Nautilus 2S comes with a pre-installed 0.4ohm coil, an extra 1.8ohm Nautilus BVC coil, users can also use a Nautilus BVC 1.6ohm coil, a Nautilus 2, 0.7ohm coil, a Triton mini 1.2ohm coil, a Triton mini 1.8ohm coil on the Nautilus 2S tank.
Nautilus AIO 1.8ohm (NS) coil and triton mini 0.15ohm coil are not suitable for the Nautilus 2S tank.