I bought it a month ago for my partner to try out since his hair is quite...

I bought it a month ago for my partner to try out since his hair is quite thin. It works great to thicken and strengthen his hair alongside with a scalp serum. However, it would be better if the device or app shows how much battery left since this device actually takes up quite a lot of power. Like we use for a 10 min treatment per day and we need to charge after a week (or 10 days) since it's completely empty. Would be great if FOREO adds this function to this device. But happy with this item over all :)