High Decibel Electronic Port Whistle with USB Charging

Durable ABS plastic shell with precision-molded airflow chamber for sharp, consistent sound projection (120dB max). Military-grade silicone mouthpiece ensures comfortable grip and hygiene.

USB-rechargeable lithium battery (500mAh) delivers 50+ hours continuous use. IP54 waterproof rating withstands rain/sweat for outdoor sports.

Multifunctional use: Football/basketball referee signaling, coach training drills, pigeon racing commands, emergency alerts, and traffic control.

Includes 3 interchangeable frequency inserts (2.8kHz/3.5kHz/4.0kHz) for customized pitch selection. Precisely CNC-machined stainless steel pea prevents jamming.

Compact 58mm design with anti-roll hex base and lanyard hole for quick access. Ships with USB-C cable and velvet storage pouch.

Wholesale MOQ discounts available - bulk pricing for sports clubs/event organizers. OEM customization for team logos/frequencies.