Usage Tips: Features: 1. LOUD HAND CRANK SIREN - This siren produces a LOUD and POWERFUL sound which universally recognized as an emergency warning, is an effective attention-getter. 2. & COMPACT DESIGN - The housing and handle are made of durable metal to create a sturdy. The handle and lever fold for easy carrying in the included waist pouch. This high-quality siren was built to ensure smooth operation for years to come. 3. VERSATILE USES - The compact portable design makes it a functional item for multiple outdoor uses. Can be easily packed in your bag as a personal safety tool during activities such as camping, hiking, and boating to scare away animals, or to signal for help in emergencies. Can be used for warnings when electricity is not available in camps, schools and residential locations. 4. EASY TO USE AND CARRY - This manual siren is super easy to crank, which also makes it a fun instrument. Once folded, it fits in a small bag or pouch, making it convenient to carry the siren with you whenever you need it. Notice: Actual color may be slightly different from the image due to different monitor and light effect. Please allow 1-3cm deviation due to manual measurement. Description: Material: aluminum alloy Diameter: 11cm Battery: No Volume: 110 (dB) Color/Style: As the picture shown includes: 1 x Hand Crank Siren Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.