Connector having shell and connector device

A connector fittable to a partner connector, comprising:

• a housing;
• a contact attached to the housing;
• and
• a conductive shell attached to the housing,
• wherein the housing includes a body portion and a fitting target portion extending the body portion to a side of fitting to the partner connector,
• a diameter of a side portion outer peripheral surface of the fitting target portion is, at at least part thereof, set smaller than a diameter of a side portion outer peripheral surface of the body portion,
• the conductive shell includes a first shell and a second shell,
• the first shell includes a cover portion configured to cover at least part of an outer peripheral surface of the housing, an elastic arm having a free end on the side of fitting to the partner connector, and a support portion elastically connecting the elastic arm to the cover portion and configured to support the elastic arm in a cantilever manner,
• the elastic arm has a lock portion configured to lock fitting between the connector and the partner connector at a position closer to a free end side than the support portion,
• the elastic arm has a stepped portion corresponding to a stepped surface of the housing provided using a difference in the diameter between the body portion and the fitting target portion, and
• the second shell includes a portion facing the stepped portion at a position closer to the side of fitting to the partner connector than the stepped portion of the elastic arm.