300.0% more mAH battery than OptimaSmart OPS-61D. More battery capacity reduces the need to charge your battery again. (1600 mAH, Li-ion vs. 400 mAH, Li-ion)
97.0 grams Lighter than OptimaSmart OPS-61D. light weight phone is easy to hold and can kept in your pocket for long time. (60 grams vs. 157 grams)
213.3% bigger screen size than OptimaSmart OPS-61D. The bigger the screen size is better the user experience of reading and watching movie or video songs. (4.7 Inch vs. 1.5 Inch)
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