Bullet Points: 13 Optional Sound Effects: There are 3 optional sound effects, loud and clear voice. 2Portable Size: The electronic keeps portable size, light weight, easy to carry. 3Cylinder Shape Pronunciation Mouth: Cylinder shape pronunciation mouth, long spread distance. 4Actual Use: Great for traffic commando and lifesaving, military training, sports competition and training and pet training. 5Suitable for: Suitable for referee, coaches, traveler, adventurer, guides, cheerleaders, lifeguards, teachers, traffic guides, old people etc. Kenmerken: * 1. Drie optionele geluidseffecten, luide en duidelijke stem. * 2. Draagbare formaat, lichte gewicht, gemakkelijk te dragen. * 3. Cilinder vorm uitspraak mond, lange verspreiding afstand. * 4. Geweldig voor verkeer commando & levensreddende, ilitaire training, sportwedstrijden en training en pet training. * 5. Geschikt voor Scheidsrechter, Coaches, Reiziger, Avonturier, Gidsen, Cheerleaders, Badmeesters, Leraren, verkeer Gidsen, oude mensen etc. Specification: Name: Whistle Material: acrylic Battery: 4 x CR2302 (included) Features: portable, wide application, loud sound. Packing List: 1 x Whistle