Designed for use in tough workouts, Monster has added two in-ear wireless models to its ‘iSport’ headphone range.

With an integrated flat battery and folded circuit board design, the ‘iSport Bluetooth Wireless SuperSlim’ is lightweight, water resistant and has a 50ft wireless range. Monster says the headphones can be worn comfortably underneath a helmet or goggles.

The ‘iSport Bluetooth Wireless’ has a 30ft range and offers a tangle-free solution for listening to music during a gym session or a jog in the park.

Both models have five hours of consistent playback time and feature full-frequency response to help active users achieve their workout goals. Monster, which aims to provide a headphone to fit every type of active lifestyle across its entire range, says its earhooks and angled ear tips make for a secure fit for every ear shape and hands-free calling and control is also possible.