Questions about Olympus PT-056 Underwater housing for TG-3 and TG-4

You must mean these desiccant bags or anti-condensation bags with silica gel or silicate. Apparently Digitec does not offer such a product.

Yes, the PT-056 UW housing is also suitable for the TG-4, all functions can be operated. The TG-4 is compatible with the shape and button arrangement of the TG-3. Recommendation: As soon as gloves have to be worn, the camera should be placed in the housing, the operation of the TG-4 (which is sealed up to 15m) is awkward with gloves. The TG-4 with the PT-056 is a super combo.

Hi. No - for the TG-5 is the PT-058. Here is the link: Olympus PT-058 Underwater Housing (45m) hope this helps