Parameter: 
- Powered by 4 x AAA batteries ( not included )
- Sonar: 125KHz wireless / red
- Wireless power input: 0.1W
- Depth range: 2 - 120 feet / 0.6 - 45m
- Wireless operating range: 100m
- Sonar frequency: 125KHz
- Sonar beam angle: 90 degree
- Radio frequency: 433.92MHz
- Operational temperature: -20 - 70 Deg.C

Package weight: 0.414 kg 
Package Size(L x W x H): 25.00 x 11.00 x 8.00 cm / 9.84 x 4.33 x 3.15 inches

Package Contents: 1 x Wireless Remote Sonar Sensor, 1 x Wireless Receiving Host, 1 x Manual ( English ), 1 x Charge Cable, 1 x String, 1 x Anten