Introducing our High-Volume Outdoor Training Electronic Whistle. Powered by two AA batteries, this whistle is designed for extended use and reliable performance during training sessions or outdoor activities. The electronic whistle delivers a powerful sound to ensure youre heard clearly in noisy environments. Customize with your logo for a personal touch or promotional needs. Made from abs material, measuring 1.50*5.51 inches, this custom high-volume outdoor training electronic whistle. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Tailored branding: Supports logo imprint and design personalization. Product Highlights: Portable, durable, practical for daily use.