The casing consists of two injection molded plastic parts which have been sealed. In this case, heating the device did not help release the adhesive or break the seal.

To open the device, a Dremel was used with a rotary blade to cut at the parting line between the two parts. Cutting was initiated at the micro-USB port and then progressed all around the seam.

In this case, the device was cut very shabbily. However, it would be possible to carefully cut along the seam to obtain the two individual casing parts.

Use appropriate protective gear like gloves and face masks to prevent cuts on the skin and prevent small particles from entering your eyes and mouth while using the Dremel.

Inside the casing was a PCB and a battery soldered and glued to the PCB.