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Lenovo Smart Paper vs Onyx Boox Note Air 4 C Comparison

A detailed, side-by-side comparison to help you pick the right eReader.
Lenovo Smart Paper
Lenovo
Lenovo Smart Paper
Onyx Boox Note Air 4 C
Onyx
Onyx Boox Note Air 4 C
Verdict

Pros & cons

Smart Paper

Boox Note Air 4 C

A versatile e-ink device that favors reading and note-taking, but lacks significant upgrades from its predecessor.

+
Good
+ Color e-ink screen
+ Android app access
+ Note-taking features
+ Flexibility and customization
+ Supports multiple services
−
Not
− Poor battery life
− Fragile build
− Lacks ingress protection
− Muted color quality
− Minimal updates from last model
Spec data

How they compare

Smart Paper
Boox Note Air 4 C
Processor
Rockchip RK3566 Quad-core 1.8 GHz
Processor
Qualcomm Qualcomm Snapdragon 750G Octa-core 2 GHz
Display
Grayscale
Display
Color
Weight
408g (14.4 oz)
Weight
420g (14.8 oz)
Highlighted cells indicate the stronger value where a clear winner exists.
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Physical comparison

Size & weight

Footprint · to scale
Smart Paper
8.9" × 7.7"
Boox Note Air 4 C
8.9" × 7.6"
Thickness · to scale
Smart Paper
0.2"
Boox Note Air 4 C
0.2"
Height
8.9" (226 mm)
Height
8.9" (226 mm)
Width
7.7" (195 mm)
Width
7.6" (193 mm)
Depth
0.2" (5.5 mm)
Depth
0.2" (5.8 mm)
Weight
408g (14.4 oz)
Weight
420g (14.8 oz)
Screen
10.3"
Screen
10.3"

Dimensions shown in inches (mm). Silhouettes are proportionally scaled for visual comparison.

Specifications sourced from manufacturers and third-party databases. Last updated November 2026. Suggest a correction →