The device is snappy and has zero lag when pushing buttons. All these could be improved upon, but theyre not deal breakers. This would be good for holding hats and thats about it. Aucune idée pour la durée de vie car je viens de le recevoir, mais je recommande fortement! Bit on the small side but ok Boots are laid down on 2nd from bottom shelf. Not sure why thats not offered as its a popular color these days. The mics sensitivity is simply incredible. I"m very Happy about these beads. Nice quality backpack but small.