The Samsung ED-SEF42A External Flash is designed to work with the Samsung NX10 digital camera. The flash provides automatic TTL exposure control. This makes low light flash photography easy. The flash is very powerful with a guide number of 42.
| Mount | Shoe |
| Guide No. | 42' (12.80 m) ISO100 at 50 mm position |
| TTL Dedication | Yes |
| Bounce Head | Yes, +0° to +90° |
| Swivel Head | None |
| Recycle Time | Not Specified By Manufacturer |
| Power Source | 4x AA Alkaline, Rechargeable Ni-MH Batteries |
| Dimensions (WxHxD) | 2.76 x 3.88 x 3.80" / 7 x 9.85 x 9.65 cm |
| Weight | 7.76 oz / 220 g Excluding batteries |