Is my 2nd one of this model.
only sprang up fully a few times - now you have to push it up manually
I love how the mechanics of it work and it hits very well!
The battery last FOREVER!! Which is great for convenience of having not to worry except maybe once a week or so on charging. I also LOVE the way the cartridge is hid until I want to use it. Just fit anywhere your keys would...purse, pocket, even tucked away in your bra! If it was a darker purple it would be absolutely PERFECT!!!