Product function: amplification, whistle, recording
Colour: Blue, Black, Red
Product power supply: 7.2V-9V; 6 batteries No. 5
Recording time: 12-20 seconds
Frequency characteristics: 300HZ-20KHZ
Transmission range: 500m
Battery life (dry): Expansion - 30 hours alarm - 4 hours
Product Specification (LWH): 270*162*220 mm
Product weight: 577g (without battery)