High Precision and Fast Receiving GPS Positioning,Large Capacity Rechargeabie Battery,User-friendiy Charging Instruction. Send Battery Power information in Real Time,Send AlS Positioning Data in Real Time,Widely Used for Search, Anti-collision, etc. Battery Power Can be Displayed at Shipborne AiS interface,Send Location Information for AlS Receiver to Display on Charts. Fishing Net Positioning, Real-time Monitoring Find the fishing net in time and reduce fuel consumption Reduce the loss of nets, find the location of the ship in time and prevent collisions. Frequency: 161.975MHz, 162.025MHz Bandwidth: 25kHz Frequency Spacing: 25kHz Modulation Mode: GMSK Power: 5W Current:less than equal 2.5A Battery Capacity: 3000mAh DC7.4V lithium battery Voltage: DC 7.4V Operating Temperature: -20℃-+60℃ Communication Range: . 10nm (Nautical Miles) GPS Data Update Time (Adjustable): 1-30 Minutes, Factory Default Setting 2 Minutes Standby Time: equal 15 Days Plug Type:US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the , the Philippines and so on. Voltage:AC110V Colour:Orange Material:plastic Package Contents: 1 * Boat Positioning Apparatus Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.