A portable communications device is a hand-held or wearable device. For example, the walkie-talkie is a device that is hand-held when in use, and wearable when not in use. Portable telephones (cellular telephones) are also carried, or worn, on a belt, or in a pocket.Portable devices have also become usable when worn. For example, most walkie talkies come with a voice operated transmit capability so that they will work hands-free, when used with a wearable microphone.