1. SO SMALL YET SO POWERFUL. How can two small noise devices create such an effect? These sound prank devices offer fun and entertainment for practical jokes. Super easy to use. Simply turn them on, select a sound, and place them in hidden locations. Enjoy the reactions as people try to locate the source. 2. LONG-LASTING PERFORMANCE. Our sound devices are designed with extended battery life, providing operation for months or even years under normal use. This makes them ideal for repeated use in playful situations. A great choice for lighthearted pranks and gags. 3. MULTIPLE SOUND OPTIONS. Why limit yourself to a single sound? Our device offers several distinct sound choices, including two cricket-like sounds, a beeping tone, and a high-pitched electronic tone designed to capture attention. Each sound can be selected for varied entertainment. 4. PRECISELY TIMED INTERVALS. We’ve optimized the timing of the sound intervals to balance detectability and persistence. Some devices activate too frequently or too rarely, reducing their effectiveness. Ours are engineered to activate at measured intervals, enhancing the overall experience. Refer to the included interval chart in product images for details. 5. EASY TO USE. Turn on the device, choose a sound setting, and place them in separate concealed locations for increased effect. When someone approaches one device, the other activates, creating confusion. Ideal for office humor or friendly pranks in appropriate settings. Color: Red Material: Plastic Package Contents: 1 x Cricket Noise Maker Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the real thing. The measurement allowed error is +/- 1-3cm.