DP-666 is a high-sensitivity radio based on NXP's high-performance automotive-grade TEF6686 chip, which has excellent selectivity and ultra-high sensitivity. This automotive DSP tuner has a wide range of functions and advanced algorithms (CEQ, EMS, iMS and PACS, noise canceller...), SDR(software-defined radio) signal processing, especially for improvement of multipath, adjacent frequency interference, weak signals There are significant advantages in processing and noise cancellation. DP-666 is a radio built on PE5PVB's open source project TEF6686_ESP32. In addition to listening to radio stations, the project also supports a wealth of advanced features, such as: almost all RDS (Radio Data System) data display, automatic/manual station scanning, squelch function, battery voltage display, changeable themes, multilingual, station presets, and more. FM:65-108 MHZ LWV:144-513 kHZ MW:520-1720(522-1791)kHz SW:1700-27000 kHZ Headphone output: using AD headphone amplifier chip MAX97220, standard 3.5mm audio connector output, independent dual amplifier design for speakers and headphones, optimized separately without affecting each other. Battery parameters: 3.7V/5000mAh, 18.5Wh, Size: 142X30X80mm Current consumption: about 3.7V/350mA, use time about 15 hours Communication interface: built-in CH340 USB to serial port chip, external communication through TYPE-C interface Colour:White/Black/Yellow Material:Plastic + Metal Package Contents: 1 x Radio 1 x Antenna 1 x Type C Cable 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.