High Volume--Electronic whistle is loud up to 125 5 decibels, has 3 different sound effects to suit different scenes. Cylindrical mouthpiece for longer distance sound transmission. Durable Electric Whistle--Made of high quality ABS, it is streamlined appearance, compact size, crack-resistant and fall-resistant. Clean and hygienic--Stop use traditional whistle-you dont have to take off your mask especially at this particular time It is a best gift for coach and PE teacher, our electric whistle can be used by multiple people, reused, and easy to carry. Handheld whistleSize:5.35in1.57in, weights about 97g, also equipped with a long lanyard, it can easily loop through backpack, sailboats, camp hike gear, life jacket, kayak PFD. You can also tie the whistle to your belt or shoulder straps for quick and easy use in case of emergency. Multi-Function Electric WhistleNO need to blow with the mouth, which could be used by multiple people and reused many times, it's more sanitary and convenient than traditional whistles with Lanyard. Electronic whistle could be used as sports whistle to referee and coach basketball, football, soccer and hockey competition, or pet whistle to training pigeon cat dog whistle, or outdoor camping hiking emergency whistleProducts from LUOLV's store