What Type of Night Time Flash are you looking for?
Black Flash- Sometimes revered to as No Glow or invisible infrared, is a night time flash that uses infrared emitters that are not visually detectable. Cameras with black flash capabilities tend to run slightly higher in price, and often have a shorter illumination range, but it is simply a trade off for being invisible at night.
Infrared Flash- Often known as IR, red flash, or low glow, is a night time flash that gives off a slight red glow when taking photos or video. Contrary to the Black Flash, Infrared Flash cameras tend to be slightly lower in price, and have a longer illumination range, but does give off a detectable red glow.