Introducing our Battery-Powered High-Decibel Electronic Whistle with Lanyard. Available in black, red, yellow, and blue, this whistle features an LED lighting function and adjustable volume control. It operates on two AA batteries, offering flexibility and ease of use. The included lanyard makes it convenient to carry. Customize with your logo for a personalized touch. Made from abs material, measuring 1.38*5.51 inches, this custom battery-powered high-decibel electronic whistle with lanyard. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Customization: Logo printing available with multiple packaging and color options. Product Highlights: Lightweight, durable clip, easy to display.