Check the listing for details. 35M-4400M Spectrum Analyzer Professional Simple Spectrum Analyzer 4.3 Inch LCD. Color: black, Condition: New. Listed at 88.20 USD. Description Features:Adopt stm32f407 single-chip microcomputer (main frequency 168M) and 4.3-inch TFTLCD (480*800) color LCD screen.Full aluminum alloy housing and rotary encoder control.Built-in lithium battery, full English display.Spectrum display range is 35M-4400MHz.Scope of use: walkie-talkie, plaything remote control, 2.4Gwifi.Specifications:Main material: aluminum alloy+metalColor: blackScreen size: 4.3 inchBattery: 1 * lithium battery, 2000mAh (included)Spectrum display range: 35M-4400MHzInput impedance: 50 ohmsRBW: 10KHz, 50KHz, 100KHz, 200KHz, 500KHz, a total of 5 gear positions can be adjustedScreen scan points: 700 pointsScanning span: 7M (10KHz), 35M (50KHz), 70M (100KHz), 140M (200KHz), 350M (500KHz)dBm range: -80dB~10dB (support manual adjustment of calibration amplitude), the unit does not have an amplifier circuit inside, if you need to measure small signals, you need an external amplifier.Maximum access signal: 10dBWorking mode: superheterodyne scanning spectrum analyzer, single scan time is 800msItem size: 145 * 70 * 30mm / 5.7 * 2.8 * 1.2inItem weight: 200g / 7.1ouncePackage size: 300 * 140 * 70mm / 11.8 * 5.5 * 2.8inPackage weight: 335g / 11.8ounceNote:This product uses the local oscillator signal and the external test signal to obtain the difference frequency signal, and calculates the amplitude of the external test signal through the detector. Using a high accuracy VCO source, the heterodyne signal frequency can be measured very accurately. Since the scanning range is very large (35M-4400M), because there is no special detection circuit for the external measurement signal due to cost and other factors, the measurement amplitude may have errors. Therefore, the product increases the magnification and displacement parameters, and the user can adjust the display waveform by himself. The amplitude display is adjusted and calibrated.Packing List:1 * Handheld Simple Spectrum Analyzer Payment Terms 1.We accept PayPal only. 2.All major credit cards are accepted through secure payment processor PayPal. 3.Payment must be received within 7 business days of auction closing. 4.We ship to your eBay or Paypal address. Please make sure your eBay and Paypal address is correct before you pay.Shipping Terms - For remote regions, we will charge your extra shipping costs. Usually it cost about 35USD-50USD. We will contact you after your payment. Thanks for your understanding.Return Terms 1. If you receive defective item, please kindly notify us within 14 days. We will guide you the returning instruction for replacement or refund. 2. If you purchased in improper condition, please NOTE that the sipping and handling fee will not be refund, all return shipping fee should paid by the buyer unless item DOA. 3. We reserve the right to refuse any returns for objective reasons.Custom Duties & Taxes 1. Import duties, taxes, and charges are not included in the item price or postage cost. These charges are the buyer's responsibility. 2. Avoiding some unnecessary trouble, please check with your country's customs office to inform us what we should declare its value before shipping.Feedback 1. If you are dissatisfied for any reason, please don't be quick to leave us neutral or negative feedback. We work hard to make sure EVERY CUSTOMER 100% SATISFIED and resolve any problem for you and always leave positive feedback to all our customers. 2. If you are satisfied with the product you received, please kindly leave us a positive feedback and 5 star DSR. If there is any problem of your order, please feel free to contact us firstly, we are responsible and credible seller, will follow it for you asap. On Sep-08-21 at 03:10:17 PDT, seller added the following information: