Product List: The set includes 6 cricket noise maker prank, 6 button batteries, 6 double-sided adhesive stickers, 1 screwdriver and instruction manual. It is the perfect gadget to play pranks with friends or partners on special days. Fun Experience: Each device can emit 16 unique sounds, such as crickets, birds, telegraphs, alarms, buzzers and other sound effects, which can instantly fill parties, classrooms or offices with laughter and vitality. Hidden Design: The prank device is small in size, exquisitely designed, and has long-lasting battery life, making it very easy to hide and difficult to find. It can be hidden in drawers, behind bookshelves, under furniture or anywhere you can think of. Perfect Gag Gift: Whether it is a holiday or anniversaries, this is a hilarious and "crazy" humorous gift. Whether it makes friends laugh or puzzles, it is an impressive surprise choice. Multi-scene Application: It is suitable for various occasions and places-birthday parties, offices, schools or homes. It can be used to play pranks on colleagues, family, friends, and classmates. It is very effective and fun. Specification: Color: purple, black Material: metal circuit board Product Size: 4.75x2.8x1.1cm/1.87x1.1x0.43 inch Package details: 6 x cricket noise makers 6 x button batteries 6 x double-sided adhesive pads 1 x screwdriver 1 x instruction manual Note: Due to manual measurement, the size and weight may have a certain error. Due to the difference between monitors, there may be a slight color difference existed.