As per the TENAA listing, both the phones have a 6.67-inch display with a centred punch-hole cutout for the selfie camera. Chinese tipster Digital Chat Station claims that K40 and K40 Pro have Samsung e4 AMOLED display with 2400×1080 pixel resolution. The phones carry a battery with 4420mAh rated capacity and 4520mAh of typical capacity. Redmi K40 and K40 share the same dimension of 163.7 x 76.4 x 7.8mm.
3C listing suggests that both the phone supports 33W fast charging. Recent leaks have revealed that Redmi K40 Pro will feature Snapdragon 888 SoC whereas the non-pro model will get Snapdragon 870 chipset. The Redmi K40 launch will take place on February 25. And, the Pro model will get a separate launch event later this year.