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120db safety alarm aluminum emergency electronic whistle for basketball referee and PE class
120db safety alarm aluminum emergency electronic whistle for basketball referee and PE class
120db safety alarm aluminum emergency electronic whistle for basketball referee and PE class
120db safety alarm aluminum emergency electronic whistle for basketball referee and PE class
120db safety alarm aluminum emergency electronic whistle for basketball referee and PE class
120db safety alarm aluminum emergency electronic whistle for basketball referee and PE class
120db safety alarm aluminum emergency electronic whistle for basketball referee and PE class

120db safety alarm aluminum emergency electronic whistle for basketball referee and PE class

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Product Overview

Description


Product Description
\t
Description
\t
electronic whistle
\t
working temperature
\t
-20℃ to +60℃
\t
humidity
\t
≤85%(25℃)
\t
sound biofidelity
\t
99%
\t
sound mode
\t
long blast/short blast/hurry long blast
\t
Decibel
\t
120db
\t
battery charge  
\t
5V1A
\t
working electrical current
\t
<400(UA)
\t
battary
\t
rechargeable lithium battary
\t
charge protect
\t
over charge protect/over working protect/short circuit
\t
battary capcity
\t
500MAH
\t
charge time
\t
3-4 hours
\t
working time
\t
≥2 hours
\t
waterproof
\t
IP54
\t
weight
\t
65g
\t
size
\t
133xφ25mm
\t
Port
\t
Ningbo
\t
min order
\t
10pcs
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