The whistle is made of brass material with corrosion-resistant electroplating technology and has no moving parts inside, which makes it very durable and works well in most environments. The double tube design with no cork ball inside makes the sound loud and stable. Small and lightweight, it is convenient to put in your hand or pocket, or attach a neck strap and hang it around your neck. It can be used for sports games and emergencies. Perfect for coastal lifeguards, sports referees, coaches, teachers, leaders, campers, and anyone who might need attention.

Features:

• Corrosion resistant
• Loud and stable whistle sound that can reach 130+dB
• Small and lightweight

Specifications:

• Dimensions of 14.8 x 8.9 x 2.2 cm
• Weight of 0.02 kg