The best walkie talkies for watersports activity

Features
1. Real-time spectrum.	11. Built-in FLASH memory.
2. Waterfall chart.	12. USB TYPE-C interface for power supply and computer connection.
3. Doppler frequency tracking.	13. High precision TXCO ± 0.5ppm (-10-60 ℃).
4, using software-defined radio technology	14. Ultra-wide working voltage range: 5-32VDC.
(SDR), full-band support SSB, CW, RTTY, AM, FM.	15. power supply reverse connect protection.
5. Double frequency conversion circuit structure.	16. Built-in GPS / BeiDou, GSM, electronic compass (acceleration, angle sensor) (optional).
6. IF width and IF shift hardware and software can be modified to provide powerful IF interference suppression.	17. GPS time service (requires optional GPS module).
7. DSP digital noise reduction.	18. Built-in UTC clock.
8. Built-in 160-6 meters high-speed automatic antenna tuner.	19. Voltage display.
9. Built-in electronic key controller, all parameters can be set flexibly.	20. Unique LORA data transmission (requires optional LORA module).
10. Built-in sound card with IQ and audio output.	21. Ultra-lightweight: ≤1KG.
22. Built-in remote operation so, remote firmware update.