12.5% more mAH battery than Zen X440. More battery capacity reduces the need to charge your battery again. (1800 mAH, Li-ion vs. 1600 mAH, Li-ion)
24.3% bigger screen size than Zen X440. The bigger the screen size is better the user experience of reading and watching movie or video songs. (2.2 Inch vs. 1.77 Inch)
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