Echo 50
Echo 90
Dimensions
1.25” X 15” length
Frequency
10 frequencies: 4kHz
– 31kHz
Depth Range
Normal power: 130ft
High power: 160ft
Power
18650 rechargeable lithium battery
261020 lithium battery
18650 (3.7V)
Normal power: 20 hours
High power: 5 hours
261020 (3.7V)
Normal power: 60 hours
High power: 15 hours
Temperature
Under 250°F
Battery Voltage
2.8V
– 4.2V
Dimensions
1.42” X 18” length
Frequency
10 frequencies: 4kHz
– 31kHz
Depth Range
Normal power: 230ft
High power: 295ft
Power
(2) 18650B2 rechargeable lithium
batteries
18650B2
(3.7V)
Normal power: 80 hours
High power: 20 hours
Temperature
Under 250°F
Battery Voltage
5.6V
– 8.4V
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