Two of the most talked-about vapes in the UK market right now sit in very different camps — one is a bold, flavour-switching disposable powerhouse, the other a forward-thinking rechargeable pod kit built for the post-ban era. Here's how they stack up.

Puff Count & Longevity

The Hayati Pro Ultra 15000 makes its ambitions clear in the name. It can realistically last 50 to 75 days for someone vaping 200–300 puffs a day due to 15,000 puffs and a dual-tank system. The IVG 12 Pro Smart Box is more modest but still impressive — it delivers up to 10,000 puffs backed by mesh coil technology and a long-lasting battery. In raw endurance, Hayati wins, though some users report the puff count doesn't always reach the full 15,000 before flavour begins to fade.

Battery

This is where the IVG pulls ahead. The IVG Pro 12 boasts a 1000mAh battery — one of the best you'll find on a prefilled pod system — and can easily last a full day of chain vaping, often stretching into a second day before needing a charge. The Hayati Pro Ultra 15000 carries an 850mAh battery with a Type-C charging port and a front LED screen showing battery percentage. Both charge via USB-C, though the IVG's larger cell gives it a measurable edge in day-to-day stamina.

Design & Build

The Hayati Pro Ultra 15000 features duo independent e-liquid tanks, individual coils for each tank at 1.1 ohms, and a display screen that tracks flavour, battery, and puff count. Its switchable mouthpiece rotates 180 degrees to flip between flavours — a genuinely clever touch. The IVG Pro 12 takes a different approach: it separates into a reusable 1000mAh battery unit and a replaceable pod assembly, with an auto-refill mechanism that feeds e-liquid from a 10ml container into a 2ml tank automatically. Design-wise, the Hayati looks flashier; the IVG feels more architecturally thoughtful.

Flavour & Coil Technology

Both use mesh coil technology for even heating and consistent flavour. The Hayati offers a wider flavour library — around 50 flavours spanning fruity, candy, and fizzy profiles — with the dual-tank system letting users run two flavours in a single device. The IVG Pro 12 keeps things curated with around 15 carefully crafted options. IVG's draw activation is precise with no detectable delay, and the flavour delivery is powerful for a device of this type.

Compliance & Value

This is the IVG's trump card. The IVG Pro 12 is fully TPD and MHRA compliant, meaning it remains completely legal in the UK after the 2025 disposable vape regulations took effect. The Hayati Pro Ultra 15000, as a traditional large-tank disposable, sits in a more legally uncertain space. On cost, the IVG's rechargeable design cuts cost per puff by roughly 70% compared to standard disposables, making it the smarter long-term investment.