Advanced Gps Technology: Equipped With High-precision Gps For Precise Location , Ensuring You Lose Track Of Your Nets Durable And Waterproof: With A Waterproof Design, This Buoy Can Withstand Harsh Marine Environments And Is Ideal For All Weather Conditions Long Battery Life: Enjoy Up To 15 Days Of Standby Time With Our Efficient Power Management System, Reducing The Need For Frequent Charging Fast Signal Reception: Features An Antenna That Quickly Captures Signals For Real-time Updates And Faster Response Times Shows The Battery Level Of The Net Finder On The Onboard Ais Interface, Sending Position Information For The Ais Receiver To Display On The Chart Frequency: 161.975mhz/162.025mhz Bandwidth: 25khz Frequency Interval: 25khz Modulation Mode: Gmsk Mit Power: 5w Mit Current: Less Than Equal 1.5a Lithium Battery Capacity: 3000mah Operating Voltage: Dc 7.4v Operating Temperature: -20+60communication Range: About 7 Nautical Miles Gps Data Update Time (adjustable): 1-30 Minutes, Default Fact