Description: The high volume of the electric whistle is wear-resistant and multifunctional, which is very suitable for sports competitions and pet training and training. It is perfect for judges, coaches, travelers, adventurers, travel guides, cheerleaders, lifeguards, teachers, road guides, etc. Made of premium ABS material, the whistle is durable, practical and multifunctional. The length of the whistle is 15cm, its width is 3.8cm, and its height is 3.3cm. The whistle is suitable for outdoor use, camping, hiking, sports, fitness center, trainers, etc. Item Name: Electric WhistleMaterial: ABS Batteries: 4 x CR2032 Battery (Not Included)Size Details:15cm x 3.8cm x 3.3cm/5.91" x 1.5" x 1.3" (Approx.) Notes: Due to the light and screen configuration difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Included:1 x Electric Whistle1 x User Manual1 x Lanyard