hello4dWhat is 2D, 3D and 4D? 2D is the standard black and white ultrasound. This type of ultrasound is recommended for babies that are 20 weeks and younger. 2D is the preferred type of imaginghello4d > xmas helo4d hello4d ToysCollectibles-hello4d Mainkan Slot Terpercaya & Nikmati Cashback Besar,hello4d Adalah Situs Game On Terpercaya Di Indonesia.