Item Type: SDR Radio Transmitter Board <br>Material: PCB <br>Development Board Battery: CR1220 Button Battery x 1, Battery Capacity: 40mAh ( Shipped With Built In Battery ) <br>Battery: 3.7V Polymer Battery x 1, Battery Capacity: 2000mAh ( Shipped With Matching Battery ) <br>Main Chip Model: Main Chip: 8731 Voice: 5M40Z, Crystal 3225 10MHZ <br>Storage: Storage Card ( Not Included )<br>1、LCD Touch Screen: This development board uses LCD touch screen, which is clear, easy to read and easy to operate. <br>2、Good Performance: This development board provides the user interface and necessary signal processing functions to perform many useful operations without a computer. <br>3、Multifunctional: This development board has voice input and output functions, with memory card slot for storing playback data, frequency management, built in TCXO high accuracy clock. <br>4、Easy To Assemble: This development board comes with a set of mounting fasteners for easy and compact assembly and portability. <br>5、Excellent PCB Material: This development board is made of excellent PCB material, which is sturdy and wear resistant.<p>1 x Motherboard</p><p>1 x Oscillator</p><p>1 x Knob</p><p>1 x Spare Battery</p><p>1 x 2 Pin Connection Cable</p><p>5 x Column</p>