SAW means Surface Acoustic Wave. SAW devices are used as filters on RF remote controls. It belongs to last generation technology. SAW based remote control is cheap, but can not suppress harmonic wave. Now SAW based remote control is gradually replaced by RF chip, as its cost is getting lower. RF chip is high integrated. It requires only few components, so it is low failure rate, high accuracy, narrow bandwidth, and ultra-low hormonic wave. It is much easier to pass CE and FCC certification. And if you want to pass Korean KC certification, RF chip is the only choice. We have remote controls based on both of two technologies. We can make whichever you prefer.
By the way, RF chip based remote control can work at DC3V (CR2032 coin battery). That means, it consumes less power, and the end user is more convenient to buy batteries for replacement.