Top 2 Reasons for Bird S668 Compared to Bird F520 14.9 grams Lighter than Bird F520. light weight phone is easy to hold and can kept in your pocket for long time. (75 grams vs. 89.9 grams) 0.3 mm Thinner than Bird F520. Slim mobile phone is easy to handle and looks gorgeous in hand. (104 x 45.50 x 15.70 mm vs. 109.8 x 48 x 16 mm) |