---
product_id: 265333398
title: "FINIS Duo Underwater MP3 Player - Bone Conduction Swim Headphones - Waterproof Audio - 4GB - MP3/WMA Compatible - 7 Hr"
brand: "finis"
price: "$136.40"
currency: USD
in_stock: true
reviews_count: 8
category: "Finis"
url: https://www.desertcart.us/products/265333398-finis-duo-underwater-mp3-player-bone-conduction-swim-headphones-waterproof
store_origin: US
region: United States of America
---

# 7 hours continuous playback 4GB storage for 1000+ songs Fully waterproof for underwater use FINIS Duo Underwater MP3 Player - Bone Conduction Swim Headphones - Waterproof Audio - 4GB - MP3/WMA Compatible - 7 Hr

**Brand:** finis
**Price:** $136.40
**Availability:** ✅ In Stock

## Summary

> 💦 Swim in Sound, Not Silence!

## Quick Answers

- **What is this?** FINIS Duo Underwater MP3 Player - Bone Conduction Swim Headphones - Waterproof Audio - 4GB - MP3/WMA Compatible - 7 Hr by finis
- **How much does it cost?** $136.40 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/265333398-finis-duo-underwater-mp3-player-bone-conduction-swim-headphones-waterproof)

## Best For

- finis enthusiasts

## Why This Product

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

## Key Features

- • **Swim-Ready Waterproof Design:** Dive in confidently—this MP3 player is engineered to perform flawlessly underwater without missing a beat.
- • **Crystal-Clear Underwater Audio:** Experience premium sound with bone conduction tech that transmits music through your cheekbones, keeping ears free and aware.
- • **Massive Music Library On-The-Go:** Store up to 1000 songs or 60 hours of your favorite playlists with 4GB of built-in flash memory.
- • **Long-Lasting Rechargeable Battery:** Keep your swim sessions powered with up to 7 hours of continuous playback on a single charge.
- • **Effortless Controls & Compatibility:** Navigate your MP3/WMA files easily with a simple interface compatible with laptops for quick music transfers.

## Overview

The FINIS Duo is a cutting-edge underwater MP3 player featuring bone conduction technology for crystal-clear audio through your cheekbones. Waterproof and designed specifically for swimmers, it offers 4GB of storage to hold up to 1000 songs, supports MP3 and WMA formats, and delivers up to 7 hours of playback on a rechargeable battery. Its intuitive controls and durable design make it the ultimate audio companion for every swim workout.

## Description

Buy FINIS Duo Underwater MP3 Player - Bone Conduction Swim Headphones - Waterproof Audio - 4GB - MP3/WMA Compatible - 7 Hr online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase.

Review: Thanks - It’s received as requested. Thanks
Review: Good product - I enjoy 😉 swimming With it

## Features

- Underwater MP3 Player: Enjoy crystal clear audio during your swim workout with the FINIS Duo MP3 player, the ultimate underwater headphones for swimming
- Bone Conduction Headphones: The Duo utilizes Bone Conduction audio transmission to deliver high-quality sound through cheekbones for the best swimming headphones experience
- Underwater Swimming Headphones: Navigate your audio files with ease with the Duo's simplified interface; Duo supports MP3 and WMA files
- Waterproof Bone Conduction Headphones: With 4GB of flash memory and a rechargeable battery life of up to 7 hours, the FINIS Duo MP3 player stores up to 1000 songs or 60 hours of playback
- About FINIS: Our mission is to simplify swimming through innovation, high-quality products, and a commitment to education

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0169RSNPG |
| Batteries | 1 Lithium Metal batteries required. (included) |
| Batteries Included? | Yes |
| Best Sellers Rank | #10,106 in Electronics ( See Top 100 in Electronics ) #26 in MP3 Players |
| Brand | FINIS |
| Color | Black/Acid Green |
| Compatible with | Laptop |
| Customer Reviews | 3.6 3.6 out of 5 stars (2,288) |
| Date First Available | 5 November 2015 |
| Department | unisex-adult |
| Description Pile | Lithium-Ion |
| Display Size | 1.77 |
| Display Type | LCD |
| Features | Fast Charging |
| Height | 2 inches |
| Included Components | FINIS Duo™ Underwater Bone Conduction MP3 Player |
| Is Discontinued By Manufacturer | No |
| Item model number | 1.30.058.244 |
| Length | 0 inches |
| Manufacturer | Finis |
| Material Composition | ABS Plastic |
| Material Type | Other |
| Number of Items | 1 |
| Number of Pieces | 1 |
| Power Source | Battery Powered |
| Product Dimensions | 6 x 15 x 22 cm; 149.69 g |
| Season | continuity 2016 |
| Size | One Size |
| Sport | Swimming |
| Style | MP3 Player |
| Usage | swimming |
| Weight | 0.22 Grams |
| Width | 5 inches |

## Product Details

- **Brand:** FINIS
- **Connectivity technology:** Wired
- **Memory storage capacity:** 4096 MB
- **Model name:** Duo Underwater
- **Special features:** Fast Charging

## Images

![FINIS Duo Underwater MP3 Player - Bone Conduction Swim Headphones - Waterproof Audio - 4GB - MP3/WMA Compatible - 7 Hr - Image 1](https://m.media-amazon.com/images/I/71-DChqjJaL.jpg)

## Questions & Answers

**Q: How do i know if this is the latest, greatest version available?  i know finis has updated it because older models had issues.**
A: The short answer is this one is the latest version.  Saying that I prefer the previous version (LED screen which allowed with to look at song titles/order, better volume control, smaller speakers attached to your goggles etc...)  design much better.  Saying that, I had 2 of them and both only lasted about 1 year.  Hopefully, this design will be better.

**Q: how do I ensure that random is not switched on? I listen to audio books and am struggling to keep it playing in order.**
A: My songs play in the order in which they were loaded....alphabetical.  I know my playlist ahead of time so I can keep track of my time without having to count laps.  I'm always afraid that I'll do something to put it in random mode, but so far, so good.  I think that you can probably look it up online.

**Q: How does the duo compare to the Neptune. Neptune stops taking a charge after a couple of months use. Thanx.**
A: I had 2 neptunes and they both broke in about 1 year.  I liked the design of the neptune much better but hope this new design lasts at least a couple of years (I have a blue/white generation 1 swimp3 that still works).

**Q: Do you think they would work clipped on to sunglasses if I wanted to use them out of the water?**
A: The short answer is yes.  But they work much better under the water.  They  are not ear buds.  I use them while I'm in the water but the sound is much fuller under water.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Thanks
*by B***8 on 21 October 2020*

It’s received as requested. Thanks

### ⭐⭐⭐⭐⭐ Good product
*by I***H on 26 July 2020*

I enjoy 😉 swimming With it

### ⭐⭐⭐⭐⭐ Great
*by R***T on 2 September 2019*

Very helpful

## Frequently Bought Together

- FINIS Duo - Underwater MP3 Player - Waterproof Bone Conduction Swimming Headphones for the Pool - Great Addition to Pool and Swimming Accessories - Supports MP3 and WMA files
- Speedo Unisex Ear Plugs for Swimming Waterproof Reusable Training
- Aegend Swim Goggles, Swimming Goggles No Leaking Full Protection Adult Men Women Youth

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.us/products/265333398-finis-duo-underwater-mp3-player-bone-conduction-swim-headphones-waterproof](https://www.desertcart.us/products/265333398-finis-duo-underwater-mp3-player-bone-conduction-swim-headphones-waterproof)

---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-14*