Product Description Color: Orange, Black, Blue Material: ABS Sound: 3 tones available Size: 13.65*3.8cm Whistle Volume: 120~150 dB Package Includes: 1 x Electronic Whistle with Lanyard 4 x CR2032 Batteries 1. Three Different Tones The whistle as an emergency signal, 3-tone function: tone 1/tone 2/tone 3 with switch. The electronic whistle with lanyard is designed with 3 different tones. You can choose the sound that best suits your needs to better utilize the electronic whistles. 2. Durable: The electronic whistles are made of high-quality ABS material and are durable and sturdy, non-toxic, tasteless and harmless to you. You can use it for a long time with confidence. Each electronic whistle comes with 4 pieces of CR2032 batteries for your use and replacement. Note: This battery is not rechargeable. 3. Easy to use, one-button operation It is not too big, fits firmly in the hand, can also disappear into the pocket of the training jacket, you need to check where the whistle button is placed. 4. Wide range of applications Electronic whistle suitable for referees, coaches, teachers, ball games and boating, running, animal training, camping and other outdoor activities. 5. Hand whistle with lanyard Comes with a removable wrist strap. Small and easy to carry. One-hand operation, simple and convenient, batteries included. Do not use the electronic whistle too close to the ears to avoid damage to the auditory nerve, and do not use it in small spaces such as rooms, premises, etc.