The nikon sb n10 underwater speedlight is compatible with all nikon 1 series compact system cameras with waterproof nikon 1 housing attached waterproof housing required not included the sb n10 speedlight is waterproof to a depth of 100m and offers a guide number 28m at iso 100 with ttl flash control the flash illuminates colours and subject detail in murky underwater environments and is designed to bring your underwater subjects to life the sb n10 speedlight securely attaches to the wate