f4f4f4f4f4f4f4f4, 1 month ago I wonder if your K400 is defective. I have the old black & white K400r (refurbished?) and the batteries last for many months even when I forget to switch it off.
I wonder if your K400 is defective. I have the old black & white K400r (refurbished?) and the batteries last for many months even when I forget to switch it off.