Fryxinte electronic whistle has three different whistle tone switching. The battery uses 2 or 4 CR2032 button batteries, which can be easily bought in supermarkets, Quanlian, Carrefour, and other hypermarkets. It is also very power-saving, durable, and short-press. There is no problem with more than 5,000 times. Remember to turn off the power after each use. When the volume drops, be prepared to replace the battery.
Suitable for: traffic command, emergency, military training, pet training, sports competition, basketball, football, volleyball, etc., various sports events, etc.