It is not only a whistle, but also a bottle opener. Made of premium copper, the whistle is solid and. With loud sound, it is suitable for outdoor sports, like hiking, camping, climbing, etc. - It can be attached to a lanyard or a key, convenient to carry.

It is not only a whistle, but also a bottle opener. Made of premium copper, the whistle is solid and. With loud sound, it is suitable for outdoor sports, like hiking, camping, climbing, etc. - It can be attached to a lanyard or a key, convenient to carry.

It is not only a whistle, but also a bottle opener. Made of premium copper, the whistle is solid and. With loud sound, it is suitable for outdoor sports, like hiking, camping, climbing, etc. - It can be attached to a lanyard or a key, convenient to carry.

It is not only a whistle, but also a bottle opener. Made of premium copper, the whistle is solid and. With loud sound, it is suitable for outdoor sports, like hiking, camping, climbing, etc. - It can be attached to a lanyard or a key, convenient to carry.

It can be attached to a lanyard or a key ring, convenient to carry. - It is not only a whistle, but also a bottle opener. With loud sound, it is suitable for outdoor sports, like hiking, camping, climbing, etc.