---
product_id: 717265264
title: "2023 Upgraded Spectrum Analyzer, SeeSii 4.0 Inch Handheld Small Frequency Analyzer"
brand: "seesii"
price: "€ 547.94"
currency: EUR
in_stock: true
reviews_count: 5
category: "Seesii"
url: https://www.desertcart.es/products/717265264-2023-upgraded-spectrum-analyzer-seesii-4-0-inch-handheld-small
store_origin: ES
region: Spain
---

# S-parameters, Smith chart & VSWR 10KHz-1.5GHz wide freq range Compact 265g, LiPo powered 2023 Upgraded Spectrum Analyzer, SeeSii 4.0 Inch Handheld Small Frequency Analyzer

**Brand:** seesii
**Price:** € 547.94
**Availability:** ✅ In Stock

## Summary

> 📡 Unlock the invisible spectrum — your pocket-sized signal whisperer!

## Quick Answers

- **What is this?** 2023 Upgraded Spectrum Analyzer, SeeSii 4.0 Inch Handheld Small Frequency Analyzer by seesii
- **How much does it cost?** € 547.94 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/717265264-2023-upgraded-spectrum-analyzer-seesii-4-0-inch-handheld-small)

## Best For

- seesii enthusiasts

## Why This Product

- Trusted seesii brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable ABS Housing:** Robust ABS casing ensures durability while cutting costs compared to fragile 3D printed alternatives.
- • **Pocket-sized Powerhouse:** Ultra-compact 4.0-inch display and lightweight 265g design fits right in your palm for on-the-go diagnostics.
- • **Field-Ready & User-Approved:** Trusted by professionals for reliable, intermediate to advanced field measurements with a stellar 4.5-star rating.
- • **Pro-grade Frequency Mastery:** Analyze signals from WiFi to car key fobs with precision across 10KHz-1.5GHz spectrum.
- • **All-in-One Vector Network Analyzer:** Measure S-parameters, VSWR, phase, delay, and visualize with Smith charts effortlessly.

## Overview

The 2023 Upgraded SeeSii 4.0 Inch Handheld Spectrum Analyzer is a compact, lightweight vector network analyzer covering 10KHz to 1.5GHz frequencies. Featuring durable ABS housing, it measures S-parameters, VSWR, phase, delay, and displays Smith charts, making it ideal for professionals needing precise, portable RF diagnostics without the premium price tag.

## Description

1.With the addition of the ABS housing and the new packaging, compared to many customers who use 3D printed housing, it saves cost.2.- Measuring S parameters, voltage standing wave ratio, phase, delay, Smith chart and the like

Review: Works properly and as expected. Was able to use it to analyze signals from wifi, car key fobs, and vco output well. Does the job of a spectrum analyzer without having to pay thousands for a professional one.
Review: Un buen grupo de buenas caracteristicas de medicion muy utiles en el trabajo de campo. Tan pequenho que lo puedes tener en la palma de tu mano y con todo lo necesario para realizar mediciones basicas e intermedias de calidad

## Features

- NanoVNA Vector Network Analyzer 10KHz-1.5GHz MF HF VHF UHF VNA Analyzer

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BBGK9QJB |
| Batteries | 1 Lithium Polymer batteries required. |
| Battery type | NiMH |
| Color Name | Black |
| Customer Reviews | 4.5 4.5 out of 5 stars (224) |
| Date First Available | 4 April 2025 |
| Item Weight | 265 g |
| Item model number | SEESII- TinySA ULTRA |
| Material Type | abs |
| Product Dimensions | 17 x 12 x 6.5 cm; 265 g |
| Size | 3.9 Inch |

## Images

![2023 Upgraded Spectrum Analyzer, SeeSii 4.0 Inch Handheld Small Frequency Analyzer - Image 1](https://m.media-amazon.com/images/I/81Vy91IOx9L.jpg)

## Questions & Answers

**Q: The data is compatible with wireless workbench (shure) and wireless system manager (sennheiser) ?**
A: I seriously doubt it.  The tinySA is more a toy than anything else, certainly not professional in operation.

**Q: Where can i download the tinysa-app software and instruction manual pdf?**
A: from their web site

**Q: Could i measure rfid signal strength from rfid antennas with this?**
A: yes

**Q: Can TinySA Ultra be used with Rational Waves software?**
A: I would guess yes, but you would have to write the code for interface, etc.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by K***N on 17 July 2025*

Works properly and as expected. Was able to use it to analyze signals from wifi, car key fobs, and vco output well. Does the job of a spectrum analyzer without having to pay thousands for a professional one.

### ⭐⭐⭐⭐⭐ Review
*by R***S on 28 March 2025*

Un buen grupo de buenas caracteristicas de medicion muy utiles en el trabajo de campo. Tan pequenho que lo puedes tener en la palma de tu mano y con todo lo necesario para realizar mediciones basicas e intermedias de calidad

### ⭐⭐⭐⭐⭐ Review
*by J***E on 14 March 2025*

I bought this to keep in my laptop bag for quick frequency scans at broadcast sites. I am surprised it works so well! In one instance, I used it to investigate interference to the LTE cellular band (720MHz), and was able to not only identify the source, but also confirm corrective actions were successful. I upgraded the software to allow for use past 1GHz and was able to clearly view an L-band signal out of a satellite LNB (~1100MHz). The screen is small and navigating the menus is a little awkward at times using the included pencil, but it's fine in most cases. And remember this is not a $15k analyzer, so the VBW, RBW and sweep times are not going to compete with one that is priced 1000x more. But for something that is small enough to fit in your hand, runs on batteries (for quite a while, honestly), and does a good enough job for most simple tasks, you can't beat it. Don't forget to buy a few SMA adapters, too.

## Frequently Bought Together

- SeeSii TinySA Ultra+ ZS406 Spectrum Analyzer, 4.0 Inch 100kHz to 5.4GHz Handheld Tiny Frequency Analyzer with 32Gb Card, 2-in-1 Signal Generator MF/HF/VHF UHF Input,V0.4.6.1,2025 Upgraded
- BECEN 10W SMA Attenuator,40db,DC to 3GHz,50 Ohm
- DHT Electronics Handheld Antenna Cable SMA Male to UHF SO-239 Female Connectors 6'' Pack of 2 for Amplifier

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**Shop now:** [https://www.desertcart.es/products/717265264-2023-upgraded-spectrum-analyzer-seesii-4-0-inch-handheld-small](https://www.desertcart.es/products/717265264-2023-upgraded-spectrum-analyzer-seesii-4-0-inch-handheld-small)

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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-02-07*