Feature: 1. ANNOYING NOISE MAKER: The annoying prank screams or crickets every about 5‑30 minutes, simply activate the stuff and conceal it. All that is left is to wait and see how others go crazy. 2. LIGHTWEIGHT DESGIN: The prank kit is compact and lightweight, easy to conceal in many unobtrusive places. The prank device is also light enough to let tape or magnets hold it in place. 3. SUITABLE SCENES: The random stuff also can hide in some unexpected corners, such as under the table and chair, the back of the potted plant leaf, inside the mattress or sofa and any other corners 4. BATTERY TYPE: Annoying noise maker built in 1pcs 240mAh button cell battery, which means the capacity is large enough to last a long time. 5. PERFECT GIFT: You can give this annoying noise maker as a gift to your friends on Halloween or April Fool Day. This helps to promote friendship. Specification: Item Type: Annoying Noise Maker Material: Alloy Product Size: Approx. 4.5 x 2 x 2cm / 1.8 x 0.8 x 0.8in Battery: 1 x button cell CR2032 240mAh (built in). Package List: 1 x Annoying Noise Maker1 x Manual