Features: This surprise buzzer delivers an unexpected shock with over 120decibels of piercing sound when triggered by touch, mimicking everyday items like pens or erasers for most surprise effect, making it an hidden prank tool. Designed with a highly realistic hidden appearance, sensitive switching, replaceable battery, and durability metal construction, it blends seamlessly into daily environments for repeatable, foolproof pranks. Ideal for friend, colleagues, and family seeking lighthearted fun, this prank buzzer acts as a social stress relief toy to ease tension and foster laughter in playful interactions. Perfect for office desks, study, parties, and gatherings, it instantly breaks monotony by sparking hilarious reactions when concealed in books, keyboards, or snack bags. Safe and harmless with a purely physical design, this buzzer ensures entertainment for all, encouraging considerate use among peers. Specifications: Component: metal Size:Approx.4x2.4cm/1.57x0.94inch 5Option Color Applicable: prank, funny and prank toy This device contains 7 types of noises; Package Includes: 1pc Noise Maker note: Please allow 1-3cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.