The Nikon SB-400 Speedlight is an intelligent and versatile external flash unit that provides i-TTL flash operation in a super-compact and ultra-lightweight body at an affordable price.
Designed as an entry-level external flash, this flash is ideal for the compact D40 and D60 digital SLR cameras, but it is also useful for hobbyists and professionals looking for a handy i-TTL flash unit offering an effortless bounce flash function. When combined with cameras that are compatible with the Nikon Creative Lighting System, the SB-400 is controlled in i-TTL or with the D40 or D60's M (manual) mode.
| Mount | Shoe |
| Guide No. | 98' (29.87 m) ISO200 at 18 mm position |
| Angle of Coverage | 56° |
| Vari-Power | None |
| TTL Dedication | Yes |
| Bounce Head | Yes |
| Swivel Head | None |
| Zoom Head | None |
| Off Camera Terminal | None |
| Recycle Time | Approximately 2.5 - 3.5 seconds |
| Power Source | 2x AA Alkaline Batteries |
| Dimensions (WxHxD) | 2.6 x 2.2 x 3.1" / 6.60 x 5.59 x 7.87 cm |
| Weight | 4.5 oz / 128 g Without batteries |