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.

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