Between the Go Color 7 and Sage, the Go Color 7 comes out ahead in storage and weight, while the Sage wins on screen size and waterproof. Overall, the Go Color 7 scores 71.5 and the Sage scores 69.6 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (71.5 vs 69.6). The decision isn't about overall quality — both clear the bar — it's about which specific trade-offs fit your use.
Pick the Go Color 7 if you carry the device everywhere and weight or thickness has been the deciding factor before. The biggest gaps in its favor are storage, weight, color screen.
Pick the Sage if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. Its strongest claims are screen size, waterproof.
Both ship with comparable resolution, so those specs don't separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity tells you both are well-rounded; the differences are about trade-offs, not quality.
Why Boox - Go Color 7 wins
- ▲Storage — 100.00% more. 64 GB vs 32 GB.
- ▲Weight — 45.00 g less. 195 vs 240.
- ▲Has Color screen.
Why Kobo - Sage wins
- ▲Screen size — 14.29% more. 8 " vs 7 ".
- ▲Has Waterproof.
Spec comparison
Display
| Spec | Boox - Go Color 7 | Kobo - Sage |
|---|---|---|
| Screen sizeⓘ | 7 " | 8 "lead |
| Resolution | 300 ppi | 300 ppi |
| Color screen | truelead | false |
| Warm light | true | true |
Design
| Spec | Boox - Go Color 7 | Kobo - Sage |
|---|---|---|
| Weight | 195 glead | 240 g |
| Waterproof | false | truelead |
| Page-turn buttons | true | true |
Storage & Battery
| Spec | Boox - Go Color 7 | Kobo - Sage |
|---|---|---|
| Storageⓘ | 64 GBlead | 32 GB |
| Battery life | 4 weeks | 8 weekslead |
Frequently asked
Spec-level deep dives
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