[OPEN BOX] Monster Clarity 102 AirLinks Wireless In-Ear Headphones - Black / Up to 30h Playtime, IPX5 Water-Resistant Earbuds, Bluetooth 5.0 in-Ear Headphones with Wireless Charging Case, TWS Earphones Built-in Dual Mic for Clearer Hands-Free Call, True Wireless Earbuds / OB-MH21901PLUS

The Monster Clarity 102 AirLinks Wireless In-Ear Headphones deliver up to 30 hours of playtime with their charging case, which itself charges wirelessly or over USB-C. Bluetooth 5.0 handles the connection, and a dual microphone system keeps hands-free calls clear. An IPX5 water-resistant rating covers sweat and light rain, so the same earbuds work for a commute and a workout. This is the black version, model MH21901.

Pure Monster Sound is the name Monster gives to the audio technology it has refined across 40 years of sound engineering. The target is a live feel, where the music surrounds you rather than sitting flat between your ears. It is the tuning philosophy behind the Clarity 102 rather than a single component.

A five-minute top-up returns up to one hour of playback, which covers the case where you forgot to charge before leaving. Each earbud runs for 8 hours on a full charge at calibrated volume levels, and the case carries the total past 30 hours. Between the fast charge and the case reserve, running flat mid-day is unlikely.

The Clarity 102 AirLinks are certified IPX5, which means they resist sweat and splashes during workouts and hold up in light rain. That rating is what makes a single pair viable for the gym as well as the walk there. They are splash resistant rather than built for immersion.

The earbuds are physically small, which makes them easy to carry and comfortable to leave in for hours rather than minutes. Weight and bulk are what usually end a long listening session, and both are kept down here. The case is sized to drop into a pocket alongside a phone.

The case takes a USB-C cable, the current standard for efficient charging, and it also charges wirelessly on a compatible pad, which is not included. Using a pad avoids cable clutter and reduces wear on the physical port, which extends the working life of the case. Both options are available rather than one replacing the other.

The Clarity 102 carries a dual microphone system with noise-cancelling technology aimed at the voice rather than the background. That is what makes a call from a busy street or a gym intelligible on the other end. Hands-free calling is handled from the earbuds, with the phone left where it is.

Monster's True Wireless Stereo technology keeps both earbuds working as an independent stereo pair with no cable between them. Bass response is lifted by the ergonomic in-ear design, which seals the ear and stops low frequencies escaping. Fit and tuning work together here rather than one compensating for the other.

The package contains the Clarity 102 AirLinks earbuds, three pairs of ear tips, a USB-C charging cable and a quick start guide. Three tip sizes mean the seal can be matched to your ears, which affects both comfort and bass. Everything needed to start listening is included except a wireless charging pad.