Detecting Depth:5-200m Detect Range:100-3000m Rechargeable Battery:Continuous working 48 hours Power:850mA Frequency:433Mhz+ -150Khz Inner Storage:EEPROM 16k*8Bit Voltage:9~12VDC Temperature Range:-40 deg C~85 deg C Operating Humidity:0~95% Ultrasonic Frequency:400-3000Mhz+ -150Khz