Hardly used and like new. I had 4 flashes at the time and only 2 of them were used often but these ones sat in my drawer. I have used sb5000 and Profoto A1 since they became available. So these have not been used for 3-4 years. Do your homework, SB910 is a master flash unit. Do your homework. These are amazing flashes. I know each of you are YouTubers. Look them up.