An input device (3000, 3001, 3002, 3003) comprising: a first electrode (32, 32A, 32B, 33, 62A, 62B, 71B, 161, 162, 164); a second electrode (13, 13A, 13B, 53, 54, 73A, 141, 142, 143, 144) that opposes to the first electrode (32, 32A, 32B, 33, 62A, 62B, 71B, 161, 162, 164) while being spaced apart from the first electrode (32, 32A, 32B, 33, 62A, 62B, 71B, 161, 162, 164); a third electrode (18, 51A, 74) that shifts relative to the second electrode (13, 13A, 13B, 53, 54, 73A, 141, 142, 143, 144) and is brought into contact with or spaced apart from the second electrode (13, 13A, 13B, 53, 54, 73A, 141, 142, 143, 144) in accordance with a rotary manipulation or a slide manipulation; the second electrode (13, 13A, 13B, 53, 54, 73A, 141, 142, 143, 144) is fixed relative to the first electrode (32, 32A, 32B, 33, 62A, 62B, 71B, 161, 162, 164), and the second electrode (13, 13A, 13B, 53, 54, 73A, 141, 142, 143, 144) is capacitively coupled to the first electrode (32, 32A, 32B, 33, 62A, 62B, 71B, 161, 162, 164). characterized in that the input device (3000, 3001, 3002, 3003) further comprises: a click spring provided with a projection; and a concavity-convexity portion (17, 117) including a convexity (17A, 117A) which contacts with the projection and a concavity (17B, 117B) which is formed next to the convexity (17A, 117A), and in that the projection is positioned at the concavity (17B, 117B) in a state where the third electrode (18, 51A, 74) is not in contact with the second electrode (13, 13A, 13B, 53, 54, 73A, 141, 142, 143, 144), and the projection is positioned at the convexity (17A, 117A) in a state where the third electrode (18, 51A, 74) is in contact with the second electrode (13, 13A, 13B, 53, 54, 73A, 141, 142, 143, 144). a first electrode (32, 32A, 32B, 33, 62A, 62B, 71B, 161, 162, 164); a second electrode (13, 13A, 13B, 53, 54, 73A, 141, 142, 143, 144) that opposes to the first electrode (32, 32A, 32B, 33, 62A, 62B, 71B, 161, 162, 164) while being spaced apart from the first electrode (32, 32A, 32B, 33, 62A, 62B, 71B, 161, 162, 164); a third electrode (18, 51A, 74) that shifts relative to the second electrode (13, 13A, 13B, 53, 54, 73A, 141, 142, 143, 144) and is brought into contact with or spaced apart from the second electrode (13, 13A, 13B, 53, 54, 73A, 141, 142, 143, 144) in accordance with a rotary manipulation or a slide manipulation; the second electrode (13, 13A, 13B, 53, 54, 73A, 141, 142, 143, 144) is fixed relative to the first electrode (32, 32A, 32B, 33, 62A, 62B, 71B, 161, 162, 164), and the second electrode (13, 13A, 13B, 53, 54, 73A, 141, 142, 143, 144) is capacitively coupled to the first electrode (32, 32A, 32B, 33, 62A, 62B, 71B, 161, 162, 164). characterized in that the input device (3000, 3001, 3002, 3003) further comprises: a click spring provided with a projection; and a concavity-convexity portion (17, 117) including a convexity (17A, 117A) which contacts with the projection and a concavity (17B, 117B) which is formed next to the convexity (17A, 117A), and in that the projection is positioned at the concavity (17B, 117B) in a state where the third electrode (18, 51A, 74) is not in contact with the second electrode (13, 13A, 13B, 53, 54, 73A, 141, 142, 143, 144), and the projection is positioned at the convexity (17A, 117A) in a state where the third electrode (18, 51A, 74) is in contact with the second electrode (13, 13A, 13B, 53, 54, 73A, 141, 142, 143, 144). a click spring provided with a projection; and a concavity-convexity portion (17, 117) including a convexity (17A, 117A) which contacts with the projection and a concavity (17B, 117B) which is formed next to the convexity (17A, 117A), and in that the projection is positioned at the concavity (17B, 117B) in a state where the third electrode (18, 51A, 74) is not in contact with the second electrode (13, 13A, 13B, 53, 54, 73A, 141, 142, 143, 144), and the projection is positioned at the convexity (17A, 117A) in a state where the third electrode (18, 51A, 74) is in contact with the second electrode (13, 13A, 13B, 53, 54, 73A, 141, 142, 143, 144).