Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Boox - Note Air 4 C | Kobo - Elipsa 2E |
|---|---|---|
| Storage | 64 GB | 32 GB |
| Resolution | 300 ppi | 227 ppi |
| Weight | 420 g | 390 g |
| Color screen | true | false |
Between the Note Air 4 C and Elipsa 2E, the Note Air 4 C comes out ahead in storage / resolution, while the Elipsa 2E wins on weight. Overall, the Note Air 4 C scores 77.7 and the Elipsa 2E scores 67.5 on our Mars Score.
Which should you buy?
The Note Air 4 C is the clear pick on raw spec strength, leading by 10.2 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the Note Air 4 C if you care most about storage / resolution. The biggest gaps in its favor are storage, resolution, color screen. The single most decisive one: Storage — 100.00% more. 64 GB vs 32 GB.
Pick the Elipsa 2E if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are weight. The single most decisive one: Weight — 30.00 g less. 390 vs 420.
Both ship with comparable screen size, waterproof, so those specs do not separate the two — focus on the differences below.
Bottom line: the Note Air 4 C is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Which should you buy: Boox - Note Air 4 C or Kobo - Elipsa 2E?
Boox - Note Air 4 C leads the current Mars Score by 10.2 points.The more useful decision is the trade-off behind that result: compare resolution, storage, weight against the way you will actually use the product.
Choose Boox - Note Air 4 C if…
Boox - Note Air 4 C has the measurable edge on storage gb, resolution ppi, has color screen.
Choose Kobo - Elipsa 2E if…
Kobo - Elipsa 2E has the measurable edge on weight g.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Boox - Note Air 4 C wins
- ▲Storage — 100.00% more. 64 GB vs 32 GB.
- ▲Resolution — 32.16% more. 300 ppi vs 227 ppi.
- ▲Has Color screen.
Why Kobo - Elipsa 2E wins
- ▲Weight — 30.00 g less. 390 vs 420.
Spec comparison
Display
| Spec | Boox - Note Air 4 C | Kobo - Elipsa 2E |
|---|---|---|
| Screen size | 10.3 " | 10.3 " |
| Resolution | 300 ppilead | 227 ppi |
| Color screen | truelead | false |
| Warm light | true | true |
Design
| Spec | Boox - Note Air 4 C | Kobo - Elipsa 2E |
|---|---|---|
| Weight | 420 g | 390 glead |
| Waterproof | false | false |
| Page-turn buttons | false | false |
Storage & Battery
| Spec | Boox - Note Air 4 C | Kobo - Elipsa 2E |
|---|---|---|
| Storageⓘ | 64 GBlead | 32 GB |
| Battery life | 3 weeks | 6 weekslead |