(Sold Separately) Replacement 1.6 Ohm coil for all Aspire Nautilus series tanks. 7 – 11 Watts recommended. Aspire Nautilus Coils are designed to be used with the Aspire Nautilus, Aspire Nautilus Mini, Aspire Nautilus 2 and Aspire Nautilus 2S vape tanks. These coils feature larger wicking holes for improved wicking, this is coupled with the BVC (Bottom Vertical Coil) Configuration - which increases flavour and cloud production.