17.6% more mAH battery than K-Touch M4. More battery capacity reduces the need to charge your battery again. (1000 mAH, Li-ion vs. 850 mAH, Li-ion)
11.1% bigger screen size than K-Touch M4. The bigger the screen size is better the user experience of reading and watching movie or video songs. (2 Inch vs. 1.8 Inch)
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