1、Accurate Positioning: Highly accurate and fast receiving GPS positioning, sending AIS positioning data in real time. 2、Battery Information: Large capacity battery is rechargeable, thoughtful charging indication, real time power information send, and the power status of the net position meter can be displayed on the AIS receiver. 3、Advantages: Widely used for search, anti collision and other purposes, and has high power transmission long communication distance. 4、Unique Design: AIS signal transmission time interval can be configured to 0.5 minutes ‑ 10 minutes. Compact size, easy to install, convenient to operate. 5、Excellent Performance: Professional manufacturing, exquisite workmanship, high accuracy, stable performance and high reliability. Item Type: Fishing GPS Positioning Tracker Material: ABS Frequency: 161.975MHz/ 162.025MHz Bandwidth: 25 KHZ Frequency Interval: 25kHz Modulation Mode: GMSK Transmission Power: 5W Emission Current: ≤1.5A Built in Battery: Lithium ion battery (DC7.4V), 3000mAhOperating Temperature: -20℃-+60℃ Communication range: approximately 10 nautical miles GPS Data update time (adjustable) : 1 to 30 minutes, 2 minutes by default Standby Time: ≥15 days Power On and Off Instructions. Power on: Rotate the power switch to on position, the red and green indicator light will be lit for 2 seconds and then go off, enter normal working state Shutdown: Rotate the power switch to the off position and enter the shutdown state Battery Charging Instructions: 1. Before use, the battery should be charged first 3. Unscrew the transparent bottom cover under the net position meter 5. When the battery is full, light up the yellow light. Charging time is about 4 - 5 hours. 6. After finishing charging, the transparent bottom cover should be screwed tightly to ensure waterproof Notice: 1. When charging, please turn the power switch to off state 2. Short circuit charging is not allowed 3. Please use the special power adapter (output DC9.2V/1A ), otherwise the machine may be burned Working Indicator Light Description Green Light is Always On: GPS positioning is in progress, and the power is higher than 7.0V Green Light Blinking: GPS positioning is in progress, the power is lower than 7.0V, please pay attention to charging the device in time Red Light is On: Entering AIS signal transmitting state Green Light and Red Light: Light up at the same time, initialize the power on 1 x Marine Locator Buoy Tracker 1 x Antenna 1 x Charger