Electronic Whistle by Hand Button
Specifications
-Just push the whistle sound button by hand and you will have the whistle sound of 100db.(Features)
-Easy to operate by hand.
-It is an ultra compact & light electronic whistle completely and practically
replacing traditional whistles.
-Just push the whistle sound button by hand and you will have the whistle sound of 100db.
-It does not need any kind of disposal batteries thanks to the built-in lithium polymer rechargeable battery.
-Hygienic to operate by hand, not mouth.
-LED light with high brightness.
-Emit actual whistle sound with about 100 dB from 1 meter.
(Specifications)
Size: 25x70x12 mm
Net weight: 19 gram
Battery: Lithium Polymer 3.7v 180mA
Charging time: approximately 60 minutes
Light: LED
Power supply: USB
Sound: 100 dB from 1 meter
Use: one month (suppose use it one time everyday when full charging)
(Application)
Teacher at school, Trainer, coach, and referee in sport
Police, traffic officer, and lifeguard
Locator in any case of emergency
Safety alarm for self-defense and crime prevention
Other emergencies
(How to use)
- One line is connecting with USB of computer for power supply.
- Other line is connected with charger part of cellular phone (standard 24 pin).
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