Koss BT/221i grey

The Koss BT/221i wireless headphones are designed for comfortable music listening during everyday use and physical activity. Thanks to Bluetooth 4.2 technology, they allow for a fast and stable connection to your phone or other player without the need for a cable. The ergonomic design with an over-the-ear clip ensures the headphones stay firmly in place, even when you're on the move. Their compact design also offers comfort for longer listening sessions. The Koss BT/221i headphones offer a frequency range of 50–18,000Hz and a sensitivity of 101dB, which ensures a balanced sound suitable for various musical styles. The built-in battery provides up to 6 hours of playback on a single charge, and charging is done via a micro USB cable. A practical control panel on the cable allows you to adjust the volume, switch tracks, or answer calls. Thanks to their sweat resistance, they are also suitable for an active lifestyle.

Wireless Bluetooth Connection

The Koss BT/221i headphones use Bluetooth 4.2 technology for wireless audio transmission from your phone, tablet, or other compatible device. Pairing is quick and takes only a few seconds. The wireless connection allows for free movement without the restriction of cables. The connection range is approximately up to 10 metres in open space. Bluetooth technology also enables both music playback and phone calls.

Over-the-Ear Clip Design

The special design with an over-the-ear clip ensures the headphones are held securely in place during movement. The Koss BT/221 headphones therefore stay firmly in place even when walking or doing light sports. The ergonomic shape helps to distribute weight and increases comfort during extended use. Thanks to their lightweight design, the headphones are suitable for everyday wear. The design also helps to keep the headphones in the correct position in the ear.

Integrated Controls and Microphone

There is a practical control panel on the cable between the headphones. The user can adjust the volume or switch tracks directly on the headphones. The built-in microphone allows you to answer and end phone calls. This makes hands-free communication convenient even while on the move. The control panel also allows you to pause or start music playback.

Durability for Active Use

The Koss BT/221 headphones are designed to handle active use throughout the day. The design is sweat-resistant, which you will appreciate during sports or extended wear. The materials are adapted for frequent use and normal movement. This allows the headphones to be used when travelling, on walks, or at work. The combination of stability and comfort ensures reliable listening in various situations.

Sound Quality

The frequency range of 50–18,000Hz covers most of the audible spectrum. The Koss BT/221 headphones provide a balanced sound suitable for various music genres. A sensitivity of 101dB ensures sufficient volume even with lower-powered devices. The sound is clear and easily discernible when listening to music and podcasts. The headphones are therefore suitable for everyday listening.