Thank you for coming to our shop, I hope it is to your satisfaction Item Name: Electronic Whistle Material: ABS Battery: 6F22 9V(Battery Not Included) Features: Lightweight, Compact, Loud Sound Size Details: 14cm x 4.1cm x 3cm Specifications: Designed with many excellent characteristics, such as high frequency, high decibel and loud crisp sound, this dolphin whistle could be the best choice for cheerleading, cheering, training basket and more. The sound is loud enough to be quite effective in getting attention. Since the multifunctional electronic whistle has lightweight and compact size design, you can use it in many occasions and can easily take it out. Also, it adopts LED light design. Ideal for camping, hiking, fishing. It is constructed of ABS material. There are 3 different volume for you to adjust. Adjust the volume to the level that best meets your needs in different spaces and occasions. The length of this product is 14cm, width is 4.1cm and height is 3cm. This product is perfectly suitable for camping, hiking, school, outdoor, etc. Kindly Remind: Due to light and display, there may be slight differences between the picture and the actual color of the product. The color is subject to the goods received. In addition, please allow slight size difference due to manual measurement. High quality, assured choice is guaranteed Package Includes: 1 x Electronic Whistle