Ulanzi SL02 USB rechargeable hot shoe flash, with flash and LED light mode switching function. I bought it but rarely used it, so I'm putting it up for sale. It's very simple and compact, and also has an LED mode. It's small, so how about it for emergencies? It can be used with most major camera manufacturers if they have a hot shoe. *Operation confirmed with Nikon, Canon, Fuji, and Panasonic. - Model: SL02 - Connection type: Hot shoe - Function: Mode switching function available - Power: USB rechargeable Thank you for looking.