A wrist-worn device is provided, which includes a device main body and an earphone. An accommodating groove for placing the earphone is provided on the device main body, a key is slidably mounted on one of the device main body and fee earphone. A clamping groove is provided on the other one of the device main body and the earphone, and a snapin head cooperating with the clamping groove is provided at a top of the key. The key is provided with a first attraction portion, the device main body or the earphone having the clamping groove is provided with a second attraction portion, and the first attraction portion is magnetically attracted with the second attraction portion in a case that the key slides forward until the snapin head is inserted into the clamping groove.