Monster Clarity 101 AirLinks Wireless In-Ear Headphones - Blue / IPX5 Waterproof, Bluetooth Earbuds 5.0, Up to 25 Hours with Fully Charged Case, Bluetooth Headphones Built-in Mic, Truly Wireless Headphones with Deep Bass for Sport, Lightweight Design and Snug fit / MH21902BL / MH21902BL

The Monster Clarity 101 AirLinks (MH21902BL) are truly wireless in-ear headphones with Bluetooth 5.0, an IPX5 rating and up to 25 hours of playtime with a fully charged case. The video shows the earbuds being taken out of the charging case, paired to a phone and worn, so you can see how they sit in the ear and how the case closes around them again afterwards.

A single multifunction button, the MFB, covers playback and call handling: select tracks, adjust volume, manage calls and switch between mono and stereo modes without reaching for the phone. Voice assistant access sits on the same button. Either earbud can take a call, so one can stay in your ear while the other rests in the charging case.

Pairing takes one step: lift the earbuds out of the charging case, turn Bluetooth on and choose Clarity 101 AirLinks from the device list. The IPX5 rating means the housings are built to resist sweat, water and rain, which is what makes them usable on an outdoor run or through a gym session rather than indoors alone.

The charging case is magnetic, so the earbuds pull themselves onto their contacts instead of needing to be lined up by hand. Auto on/off powers them down as they go back in and wakes them when they come out, and smart charging manages the top-up so the case is not drained by earbuds that are already full.

Powerful audio drivers give the Clarity 101 AirLinks their high-fidelity sound and the punchy, deep bass Monster tunes them for. Noise-cancelling technology works alongside those drivers so less of the surrounding sound washes over the track. Monster aims the combination at workouts, where a strong low end has to stay present while everything else is moving.

The earbuds are ergonomically crafted from lightweight materials and shaped to hold their position through a workout rather than working loose as you move. The fit is snug, which is what keeps them comfortable across a long listening session. Multiple ear tip sizes are supplied so the seal can be matched to each ear instead of accepting one fixed size.

In the box are the left and right earphones, the charging case, one pair of sport clips already installed, three pairs of eartips in small, medium and large, a USB-C charging cable and quick start guidance. Everything needed to fit the earbuds and keep the case powered is there from the first day, including the cable that tops the case back up.