Get started in 30 min, image quality superiore, the only bemol- half a day and 10 qqs scans- and we must change the power piles.Pas possibility of USB, then we are obliged to charge the cells each day. I dragged in my bag to scan all invoices / orders / checks paid / shopping lists / recipes magazines / business cards etc and autonomy is not suffisante.On is linked to the wall socket with a recharger. What a pity.