Thanks. At the moment, unfortunately it's not rechargeable. We've reduced the bill of materials count to almost nothing. It's just a few parts, mainly adhesive tape and aluminium foil, so it's meant to be used more like an RFID label that works without scanning. That said, we do have some R&D going to implement an energy harvesting method that could extend the life for several years (that's actually how David and I met years ago, in roughly that technology space).