Samsung's smaller flash for the NX series is a logical extension of the accessories. The little one's future with me always with you and should be sufficient for many shooting modes. The build quality is good, the operation simple. Unfortunately, the device is enclosed, no batteries, 2 AA are required for commissioning. The pairing with my NX-10 is quick and easy, the luminous efficiency is good. For me this little flash is the perfect addition to the built-in flash of the NX10 - and for the NX100 is a must.