This is a slightly smaller and a little lighter case for the Spektrum Sky Remote ID Module (SPM9500). It provides protection for the PCB without any additional bulk as with the factory case. The weight savings is only ~1 gram from the original but does make for a smaller package overall.
The example is printed in Transparent Overture PETG with a 0.4mm nozzle and the 0.2mm Structural Profile. The lid does provide a light friction fit into the case body and there are small tabs incorporated if you want to add a spot of CA to hold it together more securely.
Note: This will likely void any warranty once you remove the module from the original case.
The author marked this model as their own original creation.