Item Type: Electronic Whistle_x005F_x000D_Material: ABS_x005F_x000D_Battery: 1 x 6F22 battery, shipped without battery. 1Clean for Using: The electronic whistle can be used by pressing the button, no more oral contact and makes the whistle blowing clean and safe. 2Clear Whistling: Comes with 3 tones and 3 volume levels adjustable, the sports whistle can give out a strong and consistent sound of 120?150dB. 3Wide Application: Widely applicable to all sports events, pet training, outdoor camping and hiking and other emergencies, useful and reliable. 4The ABS Material: Adopting premium ABS material that is odorless and safe, the training whistle with a sturdy structure is very durable for use. 5Simple Carrying: Light in weight and compact in size as well, the whistle also has a lanyard, very convenient to carry for indoor and outdoor.1 x_x005F_x000D__x005F_x000D_Electronic Whistle 1 x Lanyard 1 x User Manual