---
product_id: 638200435
title: "Open Free AC100 Open Ear Headphones, Bluetooth 5.3 Wireless Headphones with Earhooks, Immersive Stereo Sound by Dual Large Driver, Clear Talk, 30H Playtime,Waterproof Sport Earbuds for Running"
brand: "monster"
price: "S/.273"
currency: PEN
in_stock: true
reviews_count: 5
category: "Monster"
url: https://www.desertcart.pe/products/638200435-open-free-ac100-open-ear-headphones-bluetooth-5-3-wireless
store_origin: PE
region: Peru
---

# Bluetooth 5.3 fast & stable 16mm dual large drivers 30H ultra-long battery Open Free AC100 Open Ear Headphones, Bluetooth 5.3 Wireless Headphones with Earhooks, Immersive Stereo Sound by Dual Large Driver, Clear Talk, 30H Playtime,Waterproof Sport Earbuds for Running

**Brand:** monster
**Price:** S/.273
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your sound, stay aware, and never miss a beat with Open Free AC100!

## Quick Answers

- **What is this?** Open Free AC100 Open Ear Headphones, Bluetooth 5.3 Wireless Headphones with Earhooks, Immersive Stereo Sound by Dual Large Driver, Clear Talk, 30H Playtime,Waterproof Sport Earbuds for Running by monster
- **How much does it cost?** S/.273 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/638200435-open-free-ac100-open-ear-headphones-bluetooth-5-3-wireless)

## Best For

- monster enthusiasts

## Why This Product

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

## Key Features

- • **AI-Powered Noise Canceling:** Stay focused with smart noise reduction that silences distractions without isolating you from your environment.
- • **Marathon-Ready 30H Battery:** Uninterrupted productivity and playlists with a powerhouse battery that keeps pace with your busiest days.
- • **Immersive Stereo Soundstage:** Dive into rich, crystal-clear audio with deep bass and crisp highs powered by dual 16mm drivers.
- • **Open-Ear Comfort Revolution:** Experience all-day wear with zero ear canal fatigue—perfect for multitasking pros who never pause.
- • **Seamless Bluetooth 5.3 Connectivity:** Effortless pairing and ultra-stable wireless connection that keeps you in the zone, no matter where work or workouts take you.

## Overview

The Monster Open Free AC100 are open-ear, Bluetooth 5.3 wireless headphones designed for professionals and active millennials seeking comfort and clarity. Featuring dual 16mm drivers for immersive stereo sound, AI noise-canceling tech for clear calls, and a robust 30-hour battery life, these waterproof sport earbuds combine cutting-edge audio performance with all-day wearability and seamless connectivity.

## Description

Monster Open Free AC100 Open Ear Headphones, Bluetooth 5.3 Wireless Earbuds with Earhooks, Immersive Stereo Sound by Dual Large Driver, Clear Talk, 30H Playtime,Waterproof Sport Earbuds for Running

Review: Sounds great, does not hurt ears, battery life could be better. - I live this head set, works great without bugging my ears, only down side it only last just under 3 hrs for constant usage.
Review: No complaints! Get them ! - These headphones are perfect for when you want to listen to music or talk but also be aware of your surroundings. These earphones also don’t go in your ear so you no longer have to worry about painful ears like with other ear buds. Even with everything said above they are noise cancelling in terms of unwanted noise. They are super comfy and do everything Monster says and more. 10/10

## Features

- 【Comfort Open-Ear】The Open-ear design of Air conduction earphones helps to achieve true painlessly and harmlessly. No need to put the earbuds in the ear canal, so ears will not feel sore and painful even listening to music for the whole day.
- 【Immersive Stereo Sound Effects】Monster Open Free AC100 Open Ear headphones dive into a world of sonic richness with the expansive soundstage delivered by 16mm large drivers. From deep bass to crisp highs, every nuance of music is brought to life with breathtaking clarity.
- AI Noise-canceling】Monster Open Free AC100 Open ear headphones have built-in AI noise-canceling technology and dual microphones, which adopt environmental noise reduction technology to monitor the sounds around you and instantly produce an opposite signal to reduce background noise. Whether you're in a bustling café or a busy office, background noise fades away, leaving only crystal-clear conversations.
- 【30H Ultra Long Playtime】These air conduction headphones boast an impressive total battery life of 30 hours, allowing for uninterrupted listening sessions throughout the day. With each individual use lasting up to 6 hours, these headphones provide the perfect blend of longevity and reliability. No more battery anxiety.
- 【Advanced Bluetooth 5.3】With advanced Bluetooth headphones 5.3 technology, you can get 2X fast transfer speed (75% higher than the previous generation) and a more stable connection. Wireless headphones will be paired with each other automatically, and just hit on Bluetooth list "Monster Open Free AC100" on your device to connect, avoiding complex operations and saving waiting time.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D2HS2JCX |
| Additional Features | Fast Charging |
| Age Range Description | Adult |
| Antenna Location | Running, Music |
| Audio Driver Size | 16 Millimeters |
| Audio Driver Type | Dynamic Driver |
| Battery Average Life | 30 Hours |
| Best Sellers Rank | #113,372 in Electronics ( See Top 100 in Electronics ) #7,593 in In-Ear Headphones |
| Bluetooth Range | 10 Meters |
| Bluetooth Version | 5.3 |
| Brand | Monster |
| Built-In Media | User Manual |
| Cable Features | Without Cable |
| Carrying Case Material | Plastic |
| Color | Black |
| Colour | Black |
| Compatible Devices | Bluetooth-enabled devices |
| Connectivity Technology | Wireless |
| Control Method | Remote |
| Control Type | Media Control |
| Customer Package Type | FFP |
| Customer Reviews | 3.9 out of 5 stars 772 Reviews |
| Ear placement | Open Ear |
| Earpiece Shape | Open Ear |
| Enclosure Material | Silicone Plastic Thermoplastic Elastomer (TPE) |
| Form factor | Open Ear |
| Frequency Range | 20 Hz - 20,000 Hz |
| Headphone Folding Features | Open Ear |
| Headphone Jack | Without Jack |
| Headphone jack | Without Jack |
| Headphones Ear Placement | Open Ear |
| Is Autographed | No |
| Manufacturer | Monster |
| Model Name | monster_open_free_ac100 |
| Model Number | MH22156 |
| Noise Control | Active Noise Cancellation |
| Noise control | Active Noise Cancellation |
| Number of Items | 1 |
| Series Number | 22156 |
| Specific Uses For Product | Sport |
| Style Name | black |
| UPC | 810079701032 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Waterproof |
| Wireless Technology | Bluetooth |

## Product Details

- **Brand:** Monster
- **Colour:** Black
- **Ear placement:** Open Ear
- **Form factor:** Open Ear
- **Noise control:** Active Noise Cancellation

## Images

![Open Free AC100 Open Ear Headphones, Bluetooth 5.3 Wireless Headphones with Earhooks, Immersive Stereo Sound by Dual Large Driver, Clear Talk, 30H Playtime,Waterproof Sport Earbuds for Running - Image 1](https://m.media-amazon.com/images/I/71okiA+pQxL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Sounds great, does not hurt ears, battery life could be better.
*by A***O on 24 November 2025*

I live this head set, works great without bugging my ears, only down side it only last just under 3 hrs for constant usage.

### ⭐⭐⭐⭐⭐ No complaints! Get them !
*by L***A on 1 March 2025*

These headphones are perfect for when you want to listen to music or talk but also be aware of your surroundings. These earphones also don’t go in your ear so you no longer have to worry about painful ears like with other ear buds. Even with everything said above they are noise cancelling in terms of unwanted noise. They are super comfy and do everything Monster says and more. 10/10

### ⭐⭐⭐⭐⭐ I recommend these
*by M***O on 6 September 2025*

These are easy to pair with multiple devices. They stay where you want and let you still hear if someone is talking to you. They are very comfortable and the sound is amazing.

## Frequently Bought Together

- Monster Open Free AC100 Open Ear Headphones, Bluetooth 5.3 Wireless Headphones with Earhooks, Immersive Stereo Sound by Dual Large Driver, Clear Talk, 30H Playtime,Waterproof Sport Earbuds for Running
- Monster Open Free AC100 Open Ear Bluetooth 5.3 Headphones, Wireless Earbuds with Earhooks, Immersive Stereo Sound by 16mm Large Driver, Clear Calls, 30H Playtime, Waterproof Sport Earbuds for Running
- Monster Open AC601 Wireless Earbuds, Crystal Clear Call, USB-C Charging, Bluetooth 5.4 Open Earphones with ENC, IPX5 Waterproof Wireless Clip-on Earbud, 32H Playtime Earbuds (White)

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*Product available on Desertcart Peru*
*Store origin: PE*
*Last updated: 2026-07-26*