Product 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 functions as an emergency signal, offering 3 tones: tone 1 / tone 2 / tone 3 with a 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. Long-Lasting Battery: 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's not too big, sits firmly in the hand, and can even disappear into a training jacket pocket. You need to check where the whistle button is located. 4. Wide Application: Electronic whistle suitable for referees, coaches, teachers, ball games and boating, running, animal training, camping, and other outdoor activities. Small and easy to carry. One-handed 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.