Detailed Information: Latest version V1.6, and the firmware is latest original cystal : Original ECS-TXO-3225-147.4-TR from USA With white on-board antenna PLS note: the RXofffset is : -475(minus 475) Parameter: High performance 32-bit ARM processor Unassembled and tested Supports DMR,P-25,D-Star and System Fusion Onboard LEDs to show status (Tx,Rx,PTT,Mode) Up to 10mW RF power SMA antenna connector,UHF antenna included Open source 3D printable case available Mounts cleanly on all current Raspberry Pi's including the Pi Zero The firmware is pre-loaded and is easily upgraded via software. Please do not upgrade the firmware by yourself,if you have not the knowledge for it. Support and tested with PI-STAR UHF430-450MHz,433MHZ and 900MHz VHF 144 220 Opera FREQ Item Package included: 1 x MMDVM Hotspot Module(work with UHF or VHF) 1 x Case 1 x antenna 1 x OLED(not include the raspberry pi) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store