The short read: across this trio, the original Geek Bar Pulse is the small-capacity entry, the Pulse X holds the middle with a bigger battery, a curved display and an airflow control, and the Pulse X2 sits on top by rated capacity while carrying the newest screen and heating platform. Pulse = the classic format and a shorter single-flavor commitment. Pulse X = the most balanced paper spec. Pulse X2 = when the biggest listed number between replacements is what you're buying.
None of the three wins by default for every adult shopper. Everything here leans on current manufacturer information and the U.S. versions Vapmo lists — no hands-on testing claimed. Flavors, prices and stock rotate, and every advertised puff figure is a ceiling estimate, never a personal guarantee.
The Pulse Trio, One Card Each
Pulse 15K is yours if…
You like the original Pulse shape, still want Regular and Pulse modes, and would rather rotate flavors sooner than haul the highest-rated device around.
Pulse X 25K is yours if…
The middle lane appeals: more listed capacity than the Pulse, an 820mAh cell, adjustable airflow, quick charging and a larger curved screen.
Pulse X2 50K is yours if…
You want the tallest capacity in this group, a 1000mAh battery and Geek Bar's newer 0.6Ω Dual Mesh + VPU + Hyperdrive platform.
| Listed spec | Pulse 15K | Pulse X 25K | Pulse X2 50K |
|---|---|---|---|
| Regular / Pulse Mode rating | Up to 15,000 / 7,500 | Up to 25,000 / 15,000 | Up to 50,000 / 25,000 |
| Pre-filled e-liquid | 16mL | 18mL | 18mL |
| Battery | 650mAh rechargeable | 820mAh rechargeable | 1000mAh rechargeable |
| Display | Full-screen battery and e-liquid display | 3D curved display, Star UI | 3D curved display, Galaxy Cascade UI + Binary Halo Light |
| Heating / platform | Dual Mesh with Dual Core control | Dual Mesh, Dual Core and VPU | 0.6Ω Dual Mesh with VPU and Hyperdrive Core |
| Control headline | Regular and Pulse modes | Regular and Pulse modes + adjustable airflow | Regular and Pulse modes on the newest display-forward platform |
Puff-count fine print: every figure above is an advertised maximum. Geek Bar specifically notes the Pulse X2's 50,000-puff rating comes from internal testing under Regular Mode only. Draw length, mode, frequency, charging habits and other conditions all bend the real result.
First: Pulse X2 and Pulse 2 Are Not the Same Thing
Geek Bar's naming has started tripping over itself. Throughout this guide: Pulse = the original 15K; Pulse X = the curved-screen 25K; Pulse X2 — printed "PULSE X 2" on Geek Bar's official site — = the second-generation X model rated up to 50K in Regular Mode.
Pulse 2 is a different device entirely: a newer core-line Pulse with its own design and feature set, not an alternate spelling of Pulse X2. Keeping the names straight matters every time you compare specs, restock a flavor or open a product page.
The Capacity Ladder Is the Real Story
The clean climb reads 15K → 25K → 50K in Regular Mode. Pulse Mode trades ceiling for punch, so its companion ratings step down accordingly: 7.5K on the Pulse, 15K on the Pulse X, 25K on the Pulse X2.
None of which promises the X2 lasts exactly double the X for you personally. Modes are not personal odometers, and two users can empty identical devices at wildly different speeds. The sharper question: how long do you want to stay married to one sealed device and one flavor?
The original Pulse fits when 15K already covers you or when flavor rotation is the point. The Pulse X buys a longer 25K tier without maxing out. The X2 answers to buyers who weigh replacement intervals above all.
The X2 Isn't Just a Bigger Tank
Pulse X and Pulse X2 both list 18mL of pre-filled liquid — so the X2's taller 50K Regular claim cannot come from reservoir size. Geek Bar instead pitches its newer VPU + Hyperdrive platform as a system-level redesign of liquid reflow, retention and atomization.
That's a design claim by the maker, not proof of a fixed efficiency gain per user. The defensible, narrow conclusion: same listed 18mL, different heating hardware, larger battery, far higher internal-test rating.
Battery Math: 650 vs 820 vs 1000mAh
Capacity climbs rung by rung — 650mAh Pulse, 820mAh Pulse X, 1000mAh Pulse X2 — and all three listed versions recharge. Charging keeps the battery alive while the original liquid lasts; it never converts a sealed device into a refillable one.
Pulse X and X2 both advertise quick charging to roughly 80% in about 20 minutes under suitable conditions. Real charge times still depend on cable, power source, temperature and battery health.
A bigger cell doesn't banish charging on a high-capacity disposable — it mainly stores more go between plugs. For charge-averse buyers, battery size counts, but only weighed against how hard you lean on Pulse Mode.
The Screen Story Beyond the Puff Count
The original Pulse is not a screenless stick — its full-screen interface reports battery and liquid. The Pulse X restyles that into a 3D curved Star UI and adds airflow control. The X2 keeps the curve, moves to Galaxy Cascade UI with Binary Halo lighting, and wraps it in a newer display-forward body.
Functionally, the part that matters is independent readouts: battery, liquid, mode — separate and glanceable. Lighting and UI styling are taste. They may make the X2 feel newer; they prove neither better flavor nor longer real life on their own.
Flavor Can Overrule the Whole Table
No spec sheet picks your flavor. The biggest battery in the group is worthless if your flavor isn't on that model — and menus rotate, so the live selector and the physical package are the final words.
When flavor leads the decision, Vapmo's dedicated guides take over:
Those pages own flavor depth; this one settles the hardware tier first.
So Which One?
Pulse: the original-format pick
The Pulse stays the simplest door into the family — dual modes, battery/liquid display, USB-C, Dual Mesh + Dual Core heating — with the trio's lowest 15K Regular rating.
Take it when that tier suffices, when faster flavor rotation suits you, or when the original Pulse is simply what you came for. Skip it for real reasons only — not because some third-party chart claims it lacks a screen (the official model ships with a full-screen status display).
Pulse X: the balanced middle
The X holds the most even position on paper: 25K Regular / 15K Pulse ratings, 18mL, 820mAh, quick charging, adjustable airflow and the curved Star UI display.
Take it when you want more runway than the 15K without paying for the maximum tier, or when the airflow control is the feature you'd actually use.
Pulse X2: maximum listed capacity first
The X2 tops the group: 50K Regular / 25K Pulse ratings, 1000mAh, 0.6Ω Dual Mesh coil and the VPU/Hyperdrive platform.
Take it when stretching replacement intervals matters most, or when the newer screen and lighting genuinely appeal. The 50K figure stays a manufacturer internal-test maximum — never a promise about your personal total.
Upgrading From an Older Pulse?
Pulse → Pulse X is a big paper step: higher listed capacity, bigger battery, 18mL over 16mL, adjustable airflow, quick charging, curved screen. Pulse X → Pulse X2 keeps the reservoir at 18mL, so the case rests on the higher internal-test rating, 1000mAh cell, new coil/platform and redesigned display.
Upgrade when those differences answer a real priority. A Pulse X that already lasts long enough — or carries the flavor menu you prefer — is not automatically beaten by its successor.
What This Comparison Cannot Tell You
Published specs rank capacity, battery, display, modes, controls. They cannot prove which model tastes best to you, which mouthpiece feels right, or how many days a device survives your pattern.
No hands-on testing was invented here, and current prices, stock and flavor selectors are treated as moving facts, not permanent ones.
The Final Word
Pulse 15K = original, smaller-capacity pick. Pulse X 25K = balanced middle tier. Pulse X2 50K = maximum listed capacity, newest hardware. Choose the capacity tier you actually want, layer on airflow/screen/charging preferences, and finish against the live flavor menu. Current products, bundles and availability live in the Geek Bar collection at Vapmo.
disclaimer: This article is for adults aged 21+ in the United States. Nicotine is highly addictive. Advertised puff counts are estimated maximums and vary with draw duration, operating mode, airflow settings, frequency, charging behavior, storage and battery performance. Product specifications, flavors and packaging may vary by market version or production batch; the selected option and actual package are the final reference.