Have this toothbrush now for 2 years in use. At first I was very satisfied. The battery has held about 1.5-2 weeks. Meanwhile, power has quite subsided and I feel that the battery is no longer after 2 days has the force required to thoroughly clean the teeth. Although the red light does not flash, still needs to be charged.
Otherwise, the toothbrush brushing properly, only the original replaceable heads are quite expensive. But that's in most e-Toothbrushes