SYOSI Electronic Whistle, Adjustable 3 Tone & 3 Volume Electric Whistle with Lanyard Sports Whistle for Teacher Coach Referee Emergency Whistle for Volleyball Soccer Sports Outdoor (Blue)

【No Touch Mouth Whistle】: Compared with the traditional whistle, the handheld electronic whistle can avoid contacting your mouth, is safer and more hygienic at the same time, emits a louder sound, and is more likely to attract the attention of others, 【Adjustable Volumes & Tones】: 3 distinct tones and volumes for selection, which provide up to 100-130 dB sound power, you can choose the best sound for your demand., 【Long Battery Life】:Our electric whistle is powered by 3 PCS AAA batteries, which can be used for a longer time than other whistles and don't need to worry about suddenly running out of power, use it with confidence., 【Premium Material】: The electronic whistle is made of high-quality ABS environmental protection material, non-toxic, odorless and healthy. Suitable for camping, hiking, outdoor, traffic guidance, pet training, and sporting events., 【Easy to Carry】: The hand-held whistle have a perfect size of 4.64 ×1.38 inches, equipped with 20.67 inches adjustable whistle lanyard, can hang on the neck, tied on belt and backpack or put it in the pocket is ok, carried around without trouble.