mainRequire technical parameters
Product Name: Electronic Whistle
Working temperature: - 20 (-+60 (?)
Relative humidity: <85% (25 C)
Acoustic simulation 99%
Sound modes: long, short and short, short and long sound decibels: 120 dB
Charging power supply: 5V1A
Static operating current: less than 400 (UA)
Power supply: polymer lithium battery
Power Protection: Overcharge, Overdischarge, Overcurrent, Short Circuit
Power capacity: 500 (Mah)
Operating mode: touch the button lightly and turn the switch
Charging time: 3-4 hours
Continuous working hours: > 2 hours
Charging mode: special lithium battery charging module constant current trickle charge protection level; IP54
Weight: 65G (excluding chargers, packing boxes, etc.) Specification: 133*25_25mm
