The Aspire Nautilus BVC replacement coils are only available as five packs in the 1.8ohm or 1.6ohm resistance. The coils are also compatible with other tanks (eg. Silo Lite, Aspire Triton Mini, Nautilus 2 and Nautilus AIO Pod).
1.8ohm: 10 - 14W
1.6ohm: 7 - 11W
1x 5 Pack Aspire Nautilus BVC Replacement Coils