Between the Note Air 4 C and Tab Ultra C Pro, the Note Air 4 C comes out ahead in weight, while the Tab Ultra C Pro wins on storage. Overall, the Note Air 4 C scores 83.9 and the Tab Ultra C Pro scores 95 on our Mars Score.
Which should you buy?
The Tab Ultra C Pro is the clear pick on raw spec strength, leading by 11.1 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 carry the device everywhere and weight or thickness has been the deciding factor before. The biggest gaps in its favor are weight.
Pick the Tab Ultra C Pro if you care most about storage. Its strongest claims are storage.
Both ship with comparable screen size, resolution, waterproof, so those specs don't separate the two — focus on the differences below.
Bottom line: the Tab Ultra C Pro is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Boox - Note Air 4 C wins
- ▲Weight — 60.00 g less. 420 vs 480.
Why Boox - Tab Ultra C Pro wins
- ▲Storage — 100.00% more. 128 GB vs 64 GB.
Spec comparison
Display
| Spec | Boox - Note Air 4 C | Boox - Tab Ultra C Pro |
|---|---|---|
| Screen sizeⓘ | 10.3 " | 10.3 " |
| Resolution | 300 ppi | 300 ppi |
| Color screen | true | true |
| Warm light | true | true |
Design
| Spec | Boox - Note Air 4 C | Boox - Tab Ultra C Pro |
|---|---|---|
| Weight | 420 glead | 480 g |
| Waterproof | false | false |
| Page-turn buttons | false | false |
Storage & Battery
| Spec | Boox - Note Air 4 C | Boox - Tab Ultra C Pro |
|---|---|---|
| Storageⓘ | 64 GB | 128 GBlead |
| Battery life | 3 weekslead | 2 weeks |
Frequently asked
Spec-level deep dives
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