Features: 1. Compact size, exquisite appearance, lightweight and easy to carry. 2. Intelligently detect output current. When the output current exceeds the upper limit, it will actively turn off the output to protect the substitute charging equipment. 3. Adopts voice pressure expansion design, it can effectively suppress environmental noise, ensure clear and fidelity of voice quality. 4. Deep noise reduction design, clear, loud and high-fidelity call, so that you can have clear call in a noisy environment. 5. With large screen display, easy to operate. Specification: Item Type: Mobile Marine Radio Material: ABS Color: Black Model: RS-507M Call Distance: 1-10 km Working Temperature: -20℃-+60℃ Power: 25W Frequency Range: TX: 156.025-157.425 MHz RX: 156.050-163.275 MHz Main Functions: 1. Dual-frequency/ triple-frequency duty 2. Built-in for DSC 3. Can set preference channel 4. Horn dehydrating function 5. Weather channel with weather alert 6, Large screen display, easy to operate 7. External GPS receiver 8. for DSC call auto-answer 9. Scan recovery timer Size: Approx. 15.3x6.7x15.2 cm/ 6.02x2.64x5.98 inch Packing List: 1 x Mobile Marine Radio 1 x Power Cable 1 x Fixing Bracket 1 x Screw Kit 1 x User Manual