Bluetrek X3 Monaural Bluetooth Black mobile headset

X3 - Most headsets today are designed to be as small and light as possible, but this also makes them quite fragile Most headsets today are designed to be as small and light as possible, but this also makes them quite fragile. If you tend to use headsets in harsher environments such as factories and building sites, then you've probably found that most models can't take too much abuse before they finally give up the ghost. The X3 from Bluetrek promises to be a different beast altogether as it's designed to be shock, dust and splash-proof.