---
product_id: 644866481
title: "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"
brand: "monster"
price: "₱4194"
currency: PHP
in_stock: true
reviews_count: 13
category: "Monster"
url: https://www.desertcart.ph/products/644866481-monster-open-free-ac100-open-ear-headphones-bluetooth-5-3
store_origin: PH
region: Philippines
---

# Bluetooth 5.3 fast & stable 16mm dual dynamic drivers 30H ultra-long battery life 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

**Brand:** monster
**Price:** ₱4194
**Availability:** ✅ In Stock

## Summary

> 🎧 Stay aware, stay ahead — open-ear freedom meets pro-grade sound.

## Quick Answers

- **What is this?** 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 by monster
- **How much does it cost?** ₱4194 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/644866481-monster-open-free-ac100-open-ear-headphones-bluetooth-5-3)

## 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

- • **Marathon 30-Hour Playtime:** Keep your vibe alive from dawn till dusk with an industry-leading 30 hours of uninterrupted playback.
- • **AI Noise-Canceling Clarity:** Stay focused with smart dual-mic noise cancellation that silences background chaos instantly.
- • **Immersive Stereo Soundstage:** Dive into rich, crystal-clear audio with deep bass and crisp highs powered by large 16mm drivers.
- • **Open-Ear Comfort Revolution:** Experience all-day wear without ear fatigue—no earbuds inside your ear canal, just pure comfort.
- • **Seamless Bluetooth 5.3 Connectivity:** Enjoy lightning-fast pairing and rock-solid wireless connection with the latest Bluetooth tech.

## Overview

The Monster Open Free AC100 are open-ear Bluetooth 5.3 wireless earbuds featuring 16mm dynamic drivers for immersive stereo sound, AI-powered noise cancellation, and a remarkable 30-hour battery life. Designed with earhooks for secure fit and waterproofing for active lifestyles, these earbuds deliver comfort without ear canal fatigue while keeping you connected to your surroundings. Perfect for professionals and fitness enthusiasts seeking premium sound and all-day wearability.

## Description

desertcart.com: 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 : Electronics

Review: Great product - Works really well. The sound quality is excellent, and I like Open Free, so you can hear the surroundings.
Review: Much better than earbuds - Comfortanle to wear with good sound quality

## 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. Whether you're pairing with your smartphone, tablet, or laptop, enjoy stable and efficient wireless connections for uninterrupted music enjoyment.
- 【Enhanced Awareness】Seamlessly transition between different environments with Monster Open Free AC100 Open-Ear design. Stay connected to your surroundings while enjoying your favorite tunes with these open ear headphones. Whether you're commuting through busy streets or taking a leisurely stroll in the park, ambient sounds blend seamlessly with your music for an immersive listening experience.
- 【Dedicated After-Sales Support】At Monster, we prioritize your satisfaction. Our professional customer service team stands ready to assist with any inquiries or feedback you may have about our products. Don't hesitate to reach out–we're committed to ensuring a seamless shopping experience and finding solutions that meet your needs.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D2HS2JCX |
| Audio Driver Size | 16 Millimeters |
| Audio Driver Type | Dynamic Driver |
| Batteries | 3 Lithium Polymer batteries required. (included) |
| Battery Life | 30 Hours |
| Best Sellers Rank | #49,482 in Electronics ( See Top 100 in Electronics ) #577 in Open-Ear Headphones |
| Bluetooth Range | 10 Meters |
| Bluetooth Version | 5.3 |
| Cable Feature | Without Cable |
| Compatible Devices | Bluetooth-enabled devices |
| Connectivity Technology | Wireless |
| Control Method | Remote |
| Control Type | Media Control |
| Customer Package Type | FFP |
| Customer Reviews | 3.9 3.9 out of 5 stars (559) |
| Date First Available | April 23, 2024 |
| Earpiece Shape | earhook |
| Hardware Interface | Bluetooth |
| Headphones Jack | No Jack |
| Input Device Interface | Bluetooth |
| Item Weight | 6.7 ounces |
| Item model number | MH22156 |
| Manufacturer | Monster |
| Model Name | monster_open_free_ac100 |
| Noise Control Features | active_noise_cancellation |
| Package Dimensions | 5.24 x 4.49 x 1.93 inches |
| Series Number | 22156 |
| Special Feature | Fast Charging |
| Style | black |
| Supports Bluetooth Technology | Yes |
| UPC | 810079701032 |
| Units | 1.0 Count |
| Water Resistance Level | Waterproof |
| Wireless Communication Technology | Bluetooth |

## Product Details

- **Brand:** Monster
- **Color:** Black
- **Ear Placement:** Open Ear
- **Form Factor:** Open Ear
- **Noise Control:** Active Noise Cancellation

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/71okiA+pQxL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product
*by S***C on January 14, 2026*

Works really well. The sound quality is excellent, and I like Open Free, so you can hear the surroundings.

### ⭐⭐⭐⭐⭐ Much better than earbuds
*by R***H on January 10, 2026*

Comfortanle to wear with good sound quality

### ⭐ Not good at all even on sale
*by C***A on May 7, 2025*

Wow, these are the worst. The fact that these are originally 129 is crazy. I feel like I over paid with the crazy sale price. They feel super cheap the voice quality is terrible and the music quality is even worse. I get they are open early, but I expect more from Monster. Cannot recommend.

## 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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**Shop now:** [https://www.desertcart.ph/products/644866481-monster-open-free-ac100-open-ear-headphones-bluetooth-5-3](https://www.desertcart.ph/products/644866481-monster-open-free-ac100-open-ear-headphones-bluetooth-5-3)

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*Product available on Desertcart Philippines*
*Store origin: PH*
*Last updated: 2026-03-10*