brand new and high quality Features: Made of high-quality metal material, not easy to deform, sturdy and durable, and has a long service life. 35M-4400M spectrum analyzer, a perfect tool for RF frequency domain analysis. High performance, stable scanning, easy to use and operate. Specifications: Product Name: Spectrum Analyzer Application: RF frequency domain analysis tool Interface: USB Power supply: USB Standby current: 100mA Scanning current: 350mA Scan bandwidth: 33mHz~4400mHz Turn on tracking generator output bandwidth: 33mhz~3000mhz Scan step length: 33?9?168.75mHz / 125Hz, 68.75?9?1137.5mHz / 250Hz, 137.5?9?1275mHz / 500Hz, 275?9?1550mHz / 1kHz, 550?9?11100mHz / 2kHz, 1100?9 ?12200mHz / 4kHz, 2200?9?14400mHz / 8kHz Sweep frequency: 800 points/sec Scanning dynamic logarithmic ratio:> 50dB Point frequency or sweep output power: 0dBm Input detection: 10dbm Background: -60dBm Software used on the computer side: NWT4.11.09 version Computer operating system: for Windows XP, for Windows 7, for Windows 10 Material: metal Optional Styles&Colors: A(Single Circuit), B(Metal Casing), C(Screen) Style A Size: app.79x48mm/3.11x1.89in Style B Size: app.85x55x19mm/3.35x2.17x0.75in Style C Size: app.123x75x29mm/4.84x2.95x1.14in Quantity: 1pc Note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Spectrum Analyzer(other accessories demo in the picture is not included.)