Rechargeable Loud Electronic Referee Whistle for PE Teachers, Sprint, Basketball & Football Games

Product Overview
This multi-functional 3-tone electronic whistle is specially developed as an external sound source starter for sprint infrared timing system. It solves the pain points of traditional mobile triggering such as signal delay, frequent calibration and unstable Bluetooth connection, ensuring accurate and reliable data of track starting reaction time. Meanwhile, it supports multiple scenarios including referee command, group activity scheduling and physical training rhythm reminder, an essential professional equipment for sports coaches, competition referees and physical examination staff.

Core Advantages
✅ Zero-Delay Professional Starting Command
Dedicated external sound source for timing equipment with perfect sound synchronization, avoid millisecond-level delay error caused by mobile APP and Bluetooth speaker triggering, deliver authentic data for physical test and 100m sprint reaction training.
✅ 3 Scene-Oriented Sound Tones
Competition Tone: High frequency & strong penetration for track starting gunshot command;
Command Tone: Loud mid-frequency sound for crowd evacuation and team assembly;
Training Tone: Stable low-frequency rhythm for interval training and formation pace cue.
✅ 4-Level Adjustable Volume
Level 1 (90dB): Indoor basketball court & small activity room
Level 2 (105dB): Outdoor basketball court & small training site
Level 3 (115dB): Daily training on track and field playground
Level 4 (125-126dB): Long-distance command for large open-air sports events
✅ Premium Charging & Battery Life
Universal Type-C fast charging port for easy daily charging. Large-capacity lithium battery delivers ultra-long endurance, no emergency power supply needed during long-time training and multi-round competitions.
✅ Solid Craftsmanship & Humanized Details
Shock-resistant seamless body with clear damped buttons for blind operation in dark environment. Tail lanyard hole with matched lanyard for waist hanging to prevent loss during movement。

Package Contents
Electronic Whistle Host ×1
Type-C Charging Cable ×1
User Manual ×1
Anti-Lost Lanyard ×1
Flannel Storage Pouch ×1
Color Gift Box ×1

Product Specifications

Product Size: 140mm×38mm
Package Weight: 200g
Max Volume: 126dB
Battery: Detachable 18650 Lithium Battery
Charging Port: Type-C Fast Charge
Tone Gear: 4 Adjustable Gears
Package Dimension: 20×10×6cm