The Aqua Tech NS-1A Underwater Flash Housing is specifically designed for the Nikon SB-900 Speedlight. The housing provides full control for all flash functions including eTTL when used with Aqua Tech housings for Nikon digital cameras.
| Construction | Polycarbonate |
| Control Type | Mechanical |
| Controls | All |
| Depth Rating | 33' (10.1 m) |
| Buoyancy | Positive |
| TTL Compatible | Yes, Nikon i-TTL |
| Moisture Alarm | None |
| Color | Clear |
| Dimensions (WxHxD) | 4.33 x 8.07 x 6.69" (110 x 205 x 170mm) |
| Weight | 1.9 lbs (0.86Kg) |