Abstract: The present disclosure provides an electronic wearable device. The electronic wearable device includes a first module having a first contact and a second module having a second contact. The first contact is configured to keep electrical connection with the second contact in moving with respect to each other during a wearing period.

Abstract: A bus stop signaling system including a main unit installed in a bus which runs in a particular bus line and controlled to transmit a coded radio signal and to receive a particular radio calling signal, and an auxiliary unit installed in each bus stop to, wherein the auxiliary unit turns on a respective indicator lamp subject to the nature of the coded radio signal being received from the main unit so that the passenger can depress a respective calling button to provide a calling signal to the main unit and to turn on the indicator lamp thereof; the indicator lamp of the main unit is turned off when the passenger gets on the bus and inserts the coin or magnetic card, and the counter of the main unit counts one after the insertion of the coin or magnetic card.