100.0% more mAH battery than Zen X7. More battery capacity reduces the need to charge your battery again. (1000 mAH, Li-ion vs. 500 mAH, Li-ion)
20.0% bigger screen size than Zen X7. The bigger the screen size is better the user experience of reading and watching movie or video songs. (1.8 Inch vs. 1.5 Inch)
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