Protective case for smart watch

A protective case for smart watch comprising a main body;

• wherein the main body is disposed around a smart watch to provide the elastic protection effect;
• the main body formed in a frame shape has two connecting edges, a controlling edge, and an audio edge, which are formed with the same thickness;
• the two connecting edges are formed in parallel, and each of the connecting edges has an engaging slot to couple with the watch strap of the smart watch;
• an audio recess concavely formed on an inner surface of the audio edge is configured to couple with a lateral side of the smart watch;
• the audio recess has a bottom portion communicated with the location of the speaker of the smart watch, and the audio recess is extended to the display of the smart watch to form a top opening;
• the audio recess comprises a hollow surface faced toward the smart watch, and the audio recess is adapted to cover the smart watch through the hollow surface so as to form the top opening in unidirectional configuration;
• the main body comprises an upper arc ring portion and a lower arc ring portion respectively at the positions corresponding to the display and the backside of the smart watch, and the upper arc ring portion is formed at the outer side of the top opening, and while the height is defined as the backside toward the display of the smart watch, the position of the upper arc ring portion is higher than that of the top opening of the audio recess;
• the area of the bottom portion is larger than that of the top opening;
• the audio recess is easily formed, and the sounds and music from the smart watch is configured to output through the audio recess and the top opening, and the volume is increased with great sound quality as the sound wave is guided in the direction by the audio recess.