---
product_id: 78234395
title: "Crystal Earphone -Piezoelectric Classic Style Ear Piece/Bud for Crystal & Transistor Radios"
brand: "protechtrader"
price: "€ 32.43"
currency: EUR
in_stock: true
reviews_count: 1
category: "Pro Tech Trader"
url: https://www.desertcart.fi/products/78234395-crystal-earphone-piezoelectric-classic-style-ear-piece-bud-for-crystal
store_origin: FI
region: Finland
---

# Crystal Earphone -Piezoelectric Classic Style Ear Piece/Bud for Crystal & Transistor Radios

**Brand:** protechtrader
**Price:** € 32.43
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Crystal Earphone -Piezoelectric Classic Style Ear Piece/Bud for Crystal & Transistor Radios by protechtrader
- **How much does it cost?** € 32.43 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/78234395-crystal-earphone-piezoelectric-classic-style-ear-piece-bud-for-crystal)

## Best For

- protechtrader enthusiasts

## Why This Product

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

## Description

Ceramic earphone/Crystal earpiece for Crystal Radios and other projects requiring a very sensitive high impedance earpiece. Crystal radios will not work with modern earphones or 'earbuds' as they are designed to operate with amplified audio sources found in today's electronic devices. Crystal Earphones are used in the construction of the crystal radio and in some science experiments such as listening to electric fish. Specifications: ▪ Impedance: 20,000 ohm ▪ Resistance: 20,000,000 ohm ▪ Capacitance: 15,000 pf ▪ Sensitivity: 57db @ 1KHz ▪ Frequency Range: 200 - 8,000Hz ▪ Operation Temperature: -20 to 60 degree Celsius ▪ Wire: 42-inch Molded twisted Wire ▪ Connector: Tinned Leads for DIY Connections ***Note: These are the factory specifications and may vary

Review: Time Capsule - Identical to old style units supplied with things like crystal radios.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01F5XMDGK |
| Age Range (Description) | Adult |
| Audio Driver Type | Piezoelectric Driver |
| Best Sellers Rank | #394,579 in Electronics ( See Top 100 in Electronics ) #15,340 in Earbud & In-Ear Headphones |
| Compatible Devices | Crystal Radios |
| Connectivity Technology | Wired |
| Control Method | Remote |
| Date First Available | May 4, 2016 |
| Earpiece Shape | rounded_tips |
| Headphones Jack | 3.5 mm Jack |
| Included Components | Cable |
| Is Discontinued By Manufacturer | No |
| Manufacturer | ProTechTrader |
| Material | crystal |
| Model Name | Crystal |
| Noise Control | None |
| Number of Items | 1 |
| Sensitivity | 57 dB |
| Special Feature | Lightweight |
| Specific Uses For Product | DIY/Electronics Projects |

## Product Details

- **Brand:** ProTechTrader
- **Color:** Beige
- **Ear Placement:** In Ear
- **Form Factor:** In Ear
- **Impedance:** 20000 Ohms

## Images

![Crystal Earphone -Piezoelectric Classic Style Ear Piece/Bud for Crystal & Transistor Radios - Image 1](https://m.media-amazon.com/images/I/51MW8HHWzQL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Time Capsule
*by J***Y on February 28, 2024*

Identical to old style units supplied with things like crystal radios.

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**Shop now:** [https://www.desertcart.fi/products/78234395-crystal-earphone-piezoelectric-classic-style-ear-piece-bud-for-crystal](https://www.desertcart.fi/products/78234395-crystal-earphone-piezoelectric-classic-style-ear-piece-bud-for-crystal)

---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-11*