Product description Colour:Orange, black, blue Material: ABSSound: 3 tones available Size: 13.653.8cmWhistle volume: 120 - 150 dBPackage includes:1 x electronic whistles with lanyard4 x CR2032 batteries1.Three different tonesThe whistle as an emergency signal, 3-tone function: tone 1/tone 2/tone 3 with switch. The electronic whistle with lanyard are designed with 3 different tones. You can choose the sound that best suits your needs to make better use of the electronic whistles. 2.Durable: The electronic whistles made of high quality ABS material are durable sturdy, non-toxic, tasteless no harm to you. You can use it for a long time with confidence. Each electronic whistle comes with 4 pieces CR2032 batteries for your use replacement. Note: This battery is not rechargeable. 3.Easy to use, one-button operation It is not too big, fits strongly in the h, can also disappear in the training jacket pocket, you need to check where the whistle button is located.4.Wide application Electronic whistle suitable for referees, trainers, teachers, ball games boating, running, animal training, camping other outdoor activities. 5.H whistle with lanyardComes with removable h strap lanyard. Small easy to carry. One-hed operation, easy convenient, batteries included. Do not use the electronic whistle too close to your ears to avoid damage to the auditory nerve, do not use it in small spaces such as rooms, venues, etc.