Electronic Whistle 1. The electronic button whistle helps avoid mouth contact, making it ideal for referees, coaches, P.E. teachers, military personnel, outdoor camping, sports events, traffic control, pet training, and personal emergencies. 2. Features 3 sound tones and 3 volume levels to meet various needs. High-output design delivers up to 120-150 decibels, providing a louder, stronger, and more consistent sound than traditional whistles, ensuring better attention in noisy environments. 3. Built-in LED light offers illumination for outdoor use or camping. Functions as an emergency flashlight and includes SOS signal mode for use in distress situations. 4. Constructed from high-quality ABS plastic material, durable, odorless, and safe for regular use. 5. Powered by a 6F22 9V dry battery (not included), designed for extended usage. Power Supply: Dry battery (Battery model: 6F22 9V) – battery not included Color: Black + Blue Material: Plastic Package Contents: 1 x Electronic Whistle Note: Light reflection and differences in display screens may cause slight variations in color between the product image and the actual item. Measurement allows an error of +/- 1-3 cm.