Smart Device Features: Display, Battery, Coil & Capacity
"Smart" is one of those words that gets used loosely in device marketing — but what does it actually mean when you're comparing hardware?
This guide treats "smart" as an editorial category, not an industry certification. It groups four functional dimensions — Display, Battery, Coil and Capacity — and maps them across five current Puffxx devices. The goal is to show how different hardware priorities shape different devices, and to clearly separate what is verified from what is not listed.
What Makes a Device "Smart"?
In this guide, "smart" is used as an editorial category — not a standardised industry term. It describes devices that incorporate some combination of information feedback, hardware functionality and control layers beyond the most basic operation.
There is no single definition of a "smart device." Some devices show detailed digital displays. Others use simple LED indicators. Some prioritise battery capacity, others focus on coil architecture. The four dimensions covered in this guide — Display, Battery, Coil and Capacity — are a useful framework for understanding where a device places its hardware emphasis.
No single dimension makes a device "better." They simply describe different engineering choices.
Five Devices, Different Hardware Priorities
The five devices in this comparison each represent a different combination of features. Here is a quick overview before we break down each dimension:
Each device serves a different hardware philosophy. The sections below break down how they compare across the four dimensions.
Display: Information You Can See
Display features determine how much information a device can communicate to the user. There are three common formats across the current Puffxx range:
- Smart side display (HERC 12000): Digital screen showing battery level and usage tracking.
- LED indicators (IGET One 12000): Small lights indicating battery and liquid level status.
- No display (Bar Pro 10000, $CAMMM 15000): Current product information does not list a display feature.
The RELX Infinity 2 is a reusable device and does not list a display feature in its current product information. Display formats are not a ranking — they are different approaches to device feedback.
Battery: Capacity Is Not the Same as Power
Battery capacity is measured in mAh (milliampere-hour). It describes how much electrical charge a battery can hold — not how much power the device delivers at any given moment. A higher mAh figure does not automatically mean stronger output or a more intense experience.
Across the five devices:
- RELX Infinity 2: 440 mAh (rechargeable, reusable)
- RELX HERC 12000: 2600 mAh (non-rechargeable)
- IGET Bar Pro 10000: 2000 mAh (non-rechargeable)
- IGET One 12000: 2700 mAh (non-rechargeable)
- $CAMMM 15000: Battery capacity not listed in current product information
The range from 440 mAh to 2700 mAh reflects different hardware priorities — not a simple "better to worse" scale. Rechargeable devices can use smaller batteries because they can be replenished. Non-rechargeable devices often use larger batteries to support a full usage cycle without charging.
Coil: Mesh and Dual Mesh Are Different Choices
Coil architecture describes the heating element inside the device. Mesh and dual mesh are two different approaches — neither is automatically superior.
- RELX HERC 12000: Mesh Coil (resistance not specified in current product information)
- IGET Bar Pro 10000: 1.2Ω Mesh Coil
- IGET One 12000: 0.6Ω Dual Mesh Coil
- $CAMMM 15000: Mesh Coil
- RELX Infinity 2: Coil type not listed in current product information (reusable device, uses RELX Pod system)
Resistance, power delivery and airflow all interact with the coil to shape the draw experience. The coil name alone does not determine performance.
Capacity: Compare Only Compatible Product Types
Capacity refers to the volume of liquid a device holds. This specification should only be compared between devices of the same product type.
- RELX HERC 12000: 18 mL
- IGET Bar Pro 10000: 20 mL
- IGET One 12000: 18 mL
- $CAMMM 15000: Capacity not listed in current product information
- RELX Infinity 2: N/A — this is a reusable device. Liquid is held in the compatible RELX Pod, not in the device itself. The Pod capacity should not be presented as the device capacity.
Comparing a reusable device's Pod capacity to a disposable device's built-in capacity is not a like-for-like comparison. Always check the product type before comparing capacity figures.
Smart Features in Everyday Situations
Different feature combinations suit different usage patterns. Here are a few examples:
Checking Status Before Leaving Home
The HERC 12000's smart side display lets you check battery and usage tracking at a glance. The IGET One 12000's LED indicators provide a quick status check. Devices without displays require you to rely on other signals or carry a backup.
Comparing Hardware Priorities
If battery reserve is your priority, the IGET One 12000 (2700 mAh) and HERC 12000 (2600 mAh) offer the largest capacities in this comparison. If you prefer a lightweight rechargeable format, the Infinity 2 (440 mAh, reusable) represents a different approach.
Understanding Coil Differences
If coil architecture matters to you, the Bar Pro 10000 (1.2Ω Mesh) and IGET One 12000 (0.6Ω Dual Mesh) offer different structures. The HERC 12000 and $CAMMM 15000 also use Mesh coils, though resistance values are not listed for those devices in current product information.
More Features Do Not Automatically Mean a Better Device
It is tempting to assume that a device with more listed features is inherently superior. But feature count is not a quality ranking.
A device with a display, a larger battery and a dual mesh coil is not automatically "better" than a device with a simpler feature set. Different users have different priorities. Someone who values a compact, rechargeable format may prefer the Infinity 2 over a larger non-rechargeable device. Someone who wants the longest possible battery reserve may prioritise the IGET One 12000.
The right device depends on which hardware priorities matter most to you — not on which device has the longest specification sheet.
Feature Matrix: What Is Verified and What Is Not Listed
The table below summarises the four dimensions across all five devices. It clearly distinguishes between verified specifications, data that is not listed in current product information, and specifications that are not applicable to a particular product type.
| Device | Display | Battery | Coil | Capacity |
|---|---|---|---|---|
| RELX Infinity 2 | Not listed | 440 mAh | Not listed | N/A (reusable) |
| RELX HERC 12000 | Smart side display | 2600 mAh | Mesh Coil | 18 mL |
| IGET Bar Pro 10000 | Not listed | 2000 mAh | 1.2Ω Mesh Coil | 20 mL |
| IGET One 12000 | LED indicators | 2700 mAh | 0.6Ω Dual Mesh Coil | 18 mL |
| $CAMMM 15000 | Not listed | Not listed | Mesh Coil | Not listed |
Legend: Cyan = verified specification. Grey italic = not listed in current product information. Magenta = not applicable to this product type.
This matrix is a snapshot of current product data. Specifications may be updated as product information changes.
Continue Through the Feature Knowledge Hub
This article is the Feature Knowledge Hub for this week's series. Each of the five articles below explores one dimension in greater depth:
Frequently Asked Questions
What does "smart" mean in this guide?
"Smart" is used as an editorial category to describe devices with different combinations of display, battery, coil and capacity features. It is not a standardised industry certification.
Which device has the largest battery?
The IGET One 12000 has a 2700 mAh battery, followed by the RELX HERC 12000 at 2600 mAh. The $CAMMM 15000 does not list battery capacity in current product information.
Does a higher mAh mean stronger output?
No. mAh measures battery capacity, not output power. Output depends on resistance, coil architecture, power management and airflow — not just battery capacity.
Why is the Infinity 2's capacity marked N/A?
The Infinity 2 is a reusable device. Liquid is held in the compatible RELX Pod, not inside the device itself. Comparing its Pod capacity to a disposable device's built-in capacity would not be a like-for-like comparison.
What does "Not listed" mean in the Feature Matrix?
It means the specification is not currently listed in the product information available on Puffxx. It does not mean the device lacks the feature — it means the data is not available for verification.
Which device has the most features?
It depends on how you define "features." The HERC 12000 and IGET One 12000 have the most verified specifications in this comparison, but feature count is not a quality ranking. Different devices serve different hardware priorities.
View the Devices
Explore the five devices featured in this guide through their product pages.
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