Monster

Monster Open Ear AC390 Headphones, Open Ear Earbuds with Stereo Sound, Bluetooth 6.0, 24H Playtime, IPX5 Waterproof, Rotating Charging Case with Lanyard, Ultra-Light for Outdoor Sport

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$39.99
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Last updated Jun 7, 2026 at 3:46pm
Monster

About this product

About this item Pure Monster Sound - Equipped with a 13mm PU titanium diaphragm driver, the Monster Open-Ear Headphones AC390 deliver a rich and dynamic audio experience. Crisp highs, full mids, and deep bass ensure exceptional sound quality across various music styles, offering a concert-like sensory experience anytime, anywhere with these open-ear earbuds.
Crystal-Clear Calls - Featuring advanced Dynamic Noise Cancellation (DNC) technology, these wireless earbuds effectively reduce environmental noise interference. Whether you're on a call or enjoying music in busy surroundings, you'll experience clear, uninterrupted audio quality with these Bluetooth earphones.
Ultra-Lightweight Comfortable Ear-Hook Fit - Each earbud weighs just 5g, as light as a sheet of A4 paper. The soft silicone ear-hook design ensures a secure and comfortable fit for all ear shapes, making it ideal for workouts, commuting, or extended wear without discomfort. Enjoy the freedom of wireless headphones that fit snugly and comfortably.
Rotating Charging Case - The innovative rotating charging case combines functionality with modern design. It's compact and easy to carry while providing an additional 16 hours of playtime. With up to 24 hours of total battery life, these Bluetooth headphones keep your music playing all day long.
Advanced Bluetooth 6.0 - Powered by the latest Bluetooth 6.0 technology, the AC390 offers faster pairing, stable connections, and lower latency. Easily switch between devices such as smartphones, tablets, or laptops for seamless audio experiences with your Bluetooth earbuds, whether gaming or streaming.
IPX5 Water Resistant - With IPX5 waterproofing, these wireless headphones are resistant to sweat and light rain, making them perfect for workouts, outdoor activities, and daily commutes. Enjoy uninterrupted music with your wireless earbuds no matter where life takes you.
Long Battery Life - Get 8 hours of playtime on a single charge, plus an additional 16 hours from the charging case, for a total of 24 hours of listening. Whether you're on a short trip or working through a busy day, the Monster Open-Ear Earbuds AC390 keeps your music going, ensuring you never miss a beat with these versatile earphones.
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Specifications

Brand Name Monster
Model Number Open Ear AC390
Model Name Monster Open Ear AC390 Headphones
Built-In Media Open Ear AC390 Wireless Earbuds x2
Age Range Description Adult
Warranty Description 1
Customer Package Type Standard Packaging
Number of Items 1
Manufacturer Monster
Best Sellers Rank #25,432 in Electronics ( See Top 100 in Electronics ) #340 in Open-Ear Headphones
ASIN B0GVN5MNRC
Customer Reviews 3.2 out of 5 stars
Headphones Ear Placement Open Ear
Headphone Folding Features Open Ear
Earpiece Shape open-ear
Control Type Siri
Control Method Touch
Controller Type Siri, Touch
Battery Average Life 24 Hours
Noise Control Active Noise Cancellation
Audio Driver Type Dynamic Driver
Audio Driver Size 18 Millimeters
Enclosure Material Plastic, Rubber
Specific Uses For Product Business, Entertainment, Sleeping
Antenna Location Calling, Cycling, Running
Compatible Devices Smartphones, Tablets, Laptops, Gaming Consoles
Water Resistance Level Water Resistant
Additional Features Dynamic Noise Cancellation, IPX5 Water Resistant, Advanced Bluetooth 6.0, Rotating Charging Case
Headphone Jack NO Jack
Connectivity Technology Wireless
Wireless Technology Bluetooth
Bluetooth Range 10 Meters
Bluetooth Version 6.0
Color Black
Style Name AC390 Black
Carrying Case Color Black
Unit Count 71.99 Count