1. Description 2. Colour: Orange, black, blue 3. Material: ABS 4. Sound: 3 tones available 5. Size: 13.65*3.8cm 6. Whistle volume: 120 ~ 150 dB 7. Package includes: 1 x electronic whistles with lanyard, 4 x CR2032 batteries 8. Three different tones: The whistle serves as an emergency signal, featuring a 3-tone function with tone 1/tone 2/tone 3 and a switch. The electronic whistle with lanyard is designed with 3 different tones, allowing users to choose the sound that suits their needs to make better use of the electronic whistles. 9. Durable: The electronic whistles made of ABS material are durable and sturdy, non-toxic, tasteless and harmless to users, enabling long-term use with confidence. Each electronic whistle comes with 4 pieces of CR2032 batteries for use and replacement. Note: This battery is not rechargeable. 10. Easy to use, one-button operation: It is not too big, fits well in the hand, and can also be placed in a training jacket pocket. Users need to check where the whistle button is located. 11. Wide application: Electronic whistle is suitable for referees, trainers, teachers, ball games, boating, running, animal training, camping and other outdoor activities. 12. Hand whistle with lanyard: Comes with a removable hand strap lanyard, small and easy to carry. One-handed operation, easy and convenient, with batteries included. Do not use the electronic whistle too close to ears to avoid damage to the auditory nerve, and do not use it in small spaces such as rooms and venues.