说明

• Material:High quality plastic Size : 70mm*27mm*7mm Application When you travel outdoors, it can assist you to to substantiate your location, avoid getting lost, discover your partner, etc Features ①Made of wonderful plastic, light and easy to carry, smooth to apply ②The whistle has 3 holes, each gap sound is varied ③The whistle comes with a hanging chain, which might repair the whistle for easy movement Instructions for use Can be used for out of doors survival, practising applications (In the desert in distress, barren region rescue survival, the whistle performs an enormous role! Although we've larger verbal exchange package rather than whistles, but the position of the whistle nonetheless cannot be ignored Once the trendy equipment with out the supply of electricity, signal shielding area, orientation determination, water distress, etc, is when the whistle comes into play) The following is the common whistle language ●Short sound (within one second) ■Long sound (more than 3 seconds) Intra-command whistle period of 2 - 3 seconds, period between instructions of 30 seconds or extra (e repeated sending of instructions calls for an period of 30 seconds or more) ● ● ■ (Two brief ,One long) Gather within the path of the whistle ● ■ (One short, One long) Departure, acceleration ● ■ ■ (One short, Two long) Someone falls out of line, the entrance line waits for the back line ● ● ● (Three short) Seek assist when in trouble ● ● ● ■ ■ ■ ● ● ●(Three short, Three long, Three short) universal SOS code

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