130db Contactless Electric Whistle - The hand button whistle avoids mouth contact and requires no blowing to produce sound, making it ideal for teacher,coaches,pe, It offers a loud, clear and easily recognizable sound, Perfect for referee, coache, PE teacher, outdoor camp, sports events, traffic guides, pet train, and emergency self-defense

3 Adjustable Loudest Whistle - It features 3 different tones and 3 volume levels to meet the needs of various spaces and occasions, You can choose the optimal sound based on your requirements, The electronic whistle delivers up to 125dB of sound, ensuring it grabs attention

Portable Whistle with Lanyard- Designed with a streamlined body for easy grip and comfortable use, It comes with a lanyard and storage pouch, allowing you to easily attach it to backpacks, camping gear, or carry in pockets, belts, or shoulder straps for quick access

Long Life Whistle - Made from durable, impact resistant ABS material, it is nontoxic, odorless, and safe to use; Additionally, the whistle for teachers comes with four replaceable CR2032 batteries, allowing for quick replacement and eliminating the hassle of long charging times; If the sound weakens, simply replace the batteries

Quality Service - If the Electronic Whistles has any defect, we will provide free replacement, If you have any questions or suggestions, you can click "WANJOTEC Direct" on the right side of the page, and then click "Ask a question" to quickly contact us, we will help you solve the problem as soon as possible