Good Evening,
It’s a ROM by FeraLab and can be found on the XDA Developers site:
forum.xda-developers.com/smartwatch/other-smartwatches/recovery-twrp-3-2-2-0-t3816674/page16
These are the ROMs:[KW88/KW88Pro]FeraLab_FW-v6-20190301-Android7
[KW98/KW99]FeraLab_FW-v6-20190301-Android7
I have a KW99 that I purchased about a month ago and I flashed the KW99 version of the listed ROMs. The watch works great and will be rooted with the firmware. However, it does not have google play store but rather uses Aurora Store. Good Luck to those who flash it! It’s recommended that SP_Flash_Tool_v5.1628 be used to flash it. The scatter file is included with the ROM.