Plan for 4,500 to 6,000 real draws, roughly seven to ten days of typical use. The airy draw on Tornado-style devices tempts longer puffs, which shortens that; shorter, sharper draws stretch both liquid and coil.
The versions we stock are the current rechargeable, TPD-compliant builds, which is why they remain on sale after the disposables ban. Beware marketplace listings of the old single-use versions; those are illegal stock, and often fake besides.
It takes refill containers shaped like tiny water bottles, so you replenish the reservoir rather than binning the device, cutting waste and running costs while keeping the big-puff feel.