Erchang Rechargeable Wireless Remote Sonar

Brand Name: Erchang
Power Source: 3.7V Lithium-ion Battery
Language: English
Sonar Frequency: Wireless: 125Khz
Detecting Range: 0.6-36 Meter
Sonar Coverage: 90 degrees
Power Input: DC 10-18V
Depth Capability: 50m
Waterproof Design: level-4(spray-water-proof)
Approved Language: English&Russian
Sonar Coverage: 90 degrees bean angle in 125Khz