A wearable device, comprising: a watchcase provided with a mounting groove along a first direction perpendicular to a surface of the watchcase and provided with a groove along a second direction perpendicular to the first direction of the watchcase, the mounting groove and the groove being mutually communicated; a watchband, wherein an end portion of the watchband is receivable in the groove, and the end portion is provided with a U-shaped clamping groove extending along the first direction, and wherein the U-shaped clamping groove comprises a groove bottom surface, and a first side wall and a second side wall opposite to each other, a first stopper and a second stopper respectively extend from the first side wall and the second side wall to an inside of the U-shaped clamping groove, a first distance is spaced between the first stopper and the second stopper, and lengths of the first stopper and the second stopper along the first direction are less than a length of the end portion along the first direction, and lengths of the first stopper and the second stopper along the second direction are less than lengths of the first side wall and the second side wall along the second direction respectively; a button passing through the mounting groove and the groove of the watchcase and the U-shaped clamping groove of the watchband along the first direction, and being movable between a first position and a second position along the first direction, wherein in the first position, the button engages the watchband with the watchcase, and in the second position, the button is withdrawable from the U-shaped clamping groove to enable the watchband to be detached from the watchcase; and an elastic member, a first end of the elastic member abuts against the watchcase, and a second end of the elastic member abuts against the button, and in the second position, the button compresses the elastic member; characterized in that the button comprises a pressing plate, a connecting portion and a limiting portion, a lower surface of the pressing plate is connected to an end of the connecting portion, the other end of the connecting portion is connected to the limiting portion, the second end of the elastic member abuts against the limiting portion of the button, a width of the connecting portion is smaller than a width of the limiting portion, and the width of the limiting portion is greater than the first distance between the first stopper and the second stopper. a watchcase provided with a mounting groove along a first direction perpendicular to a surface of the watchcase and provided with a groove along a second direction perpendicular to the first direction of the watchcase, the mounting groove and the groove being mutually communicated; a watchband, wherein an end portion of the watchband is receivable in the groove, and the end portion is provided with a U-shaped clamping groove extending along the first direction, and wherein the U-shaped clamping groove comprises a groove bottom surface, and a first side wall and a second side wall opposite to each other, a first stopper and a second stopper respectively extend from the first side wall and the second side wall to an inside of the U-shaped clamping groove, a first distance is spaced between the first stopper and the second stopper, and lengths of the first stopper and the second stopper along the first direction are less than a length of the end portion along the first direction, and lengths of the first stopper and the second stopper along the second direction are less than lengths of the first side wall and the second side wall along the second direction respectively; a button passing through the mounting groove and the groove of the watchcase and the U-shaped clamping groove of the watchband along the first direction, and being movable between a first position and a second position along the first direction, wherein in the first position, the button engages the watchband with the watchcase, and in the second position, the button is withdrawable from the U-shaped clamping groove to enable the watchband to be detached from the watchcase; and an elastic member, a first end of the elastic member abuts against the watchcase, and a second end of the elastic member abuts against the button, and in the second position, the button compresses the elastic member; characterized in that the button comprises a pressing plate, a connecting portion and a limiting portion, a lower surface of the pressing plate is connected to an end of the connecting portion, the other end of the connecting portion is connected to the limiting portion, the second end of the elastic member abuts against the limiting portion of the button, a width of the connecting portion is smaller than a width of the limiting portion, and the width of the limiting portion is greater than the first distance between the first stopper and the second stopper.