?DEEP SOUND? The double?tube whistle has a high pitch of up to 150 dB, which can make a deep sound and remind people around. The stylish and unique design is more aesthetic and professional than the usual simple whistle.
?USED FOR? Survival whistle specially designed for emergency situations, and reliable, use anytime and anywhere, strong keychain can be fixed.
?PREMIUM MATERIAL? This double tubes whistle is ultra?sturdy and structure, stainless steel waterproof whistle, can prevent and abrasion.
?SPORTS?The whistle with keychain is suitable for hiking, camping, hunting, fishing outdoor actiuvities, also fit for sports and referees.
?WIDE USE? Whether you are hiking, jogging or standing at some distance from your loved one; it is there at your convenience. This whistle requires your lightest blow to work