The brush measures about 20 cm long and weighs 150 grams (a little heavy but it is due to the two batteries included).
The brush design is simple but beautiful.
I practice is the removable head, so one can clean the hair without damaging the ion diffuser.
Furthermore it can be taken anywhere (handbag, toilet bag ...), the ion diffuser is protected by a valve that closes when the brush is off is no danger that this abyss .
By cons it can not be used with a hair dryer or wet hair.
In conclusion this is an interesting beauty accessory for women who have long or medium length hair and tend to leave them released. The brush restores radiance and suppleness and really helps to take care of her hair.
Negative point anyway: the price. A little expensive for my taste!