Seems to be a newer version of the Lubluelu 2 in 1 Robot Vacuum recently posted here
Most obvious upgrade being 5500Pa suction on the L20 vs 4000Pa on the SL60D.
Cashrewards is currently running a 50% cashback on Temu for new customers currently which brings it to a good price - may be worth waiting for an existing customer CB deal if not a new customer
I have this model but looking for a second and preferring the base station. Any recommendations?