Feature: 1. 3.5MM HEADPHONES AVAILABLE: Full band radio receiver support audio output, support 3.5mm headphones, support 8ohm speakers 1w 2. ADOPT BNC INTERFACE: FM output supports headphone antenna, using BNC antenna interface, practical and convenient 3. FULL BAND RECEIVING: Adopt USB charging, convenient and fast. Support full band of AM, LW, MW, SW and SSB(LSB and USB) 4. REPLACEABLE CHIP: The PCB retains the si4735 package, the user can replace the chip by himself, and the software is compatible 5. STABLE AND DURABLE: Full band Radio Receiver come with stable structure, excellent performance and long service life Specification: Item Type: Full Band Radio Receiver Model: SI4735-RDS-ALL-IN-ONE-OLED Battery: 3.6V lithium battery 1000mah USB charging Support: 8ohm speaker 1w The pcb retains the si4735 package, user can replace the chip by himself, and the software is compatible Features of This Sketch: 1. AM LW MW SW SSB (LSB and USB); 2. 0.5, 1, 1.2, 2.2, 3 and 4khz audio bandwidth filters; 3. 22 pre configured commercial radio and ham bands; 4. bfo control; 5. Frequency step switch (at 1,5 and 10kHz); Bands: {Fm_band_type, 8400, 10800, 10430, 10}, {Lw_band_type, 100, 510, 300, 1}, {Mw_band_type, 520, 1720, 810, 10}, {Sw_band_type, 1720, 3500, 1900, 1}, // 160 meters {Sw_band_type, 3500, 4500, 3700, 1}, // 80 meters {Sw_band_type, 4500, 5500, 4850, 5}, {Sw_band_type, 5500, 6300, 6000, 5}, {Sw_band_type, 6300, 7800, 7050, 5}, //40 meters {Sw_band_type, 7800, 10000, 9600, 5}, {Sw_band_type, 10000, 11000, 10100, 1}, // 30 meters {Sw_band_type, 11000, 12500, 11940, 5}, {Sw_band_type, 12500, 13900, 13600, 5}, {Sw_band_type, 13900, 14500, 14270, 1}, // 20 meters {Sw_band_type, 14500, 15900, 15300, 5}, {Sw_band_type, 15900, 17900, 17600, 5}, {Sw_band_type, 17900, 18300, 18100, 1}, // 17 meters {Sw_band_type, 18300, 21900, 21200, 1}, // 15 meters {Sw_band_type, 21900, 26200, 24940, 1}, // 12 meters {Sw_band_type, 26200, 27900, 27500, 1}, // cb band (11 meters) {Sw_band_type, 27900, 30000, 28400, 1} //; // 10 meters. Package List: 1 x Radio Receiver1 x Antenna1 x Data Cable1 x User Manual1 x Wipe Cloth1 x Adhesive Stick