Koss BT221i
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Swivel ear hooks.
The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Koss 2026 - new arrivals, bestsellers, and the most relevant models Koss.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Koss 2026 - new arrivals, bestsellers, and the most relevant models Koss.
Construction. I don't like earbuds, and there are very few over-ear headphones with behind-the-ear mounts. As for the sound, I must say - it's decent sound. Very flimsy. Fell apart in less than a year. The battery is a bit weak.  Anton Alyabev: use Koss BT221i few months |
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office, one earphone, overhead, open, wireless, radio channel, 150 – 6800 Hz, 32 Ohm, battery: up to 9 h
студийные, overhead, closed, wired, 3.5 mm, 6.35 mm, 3 m, no microphone, 15 – 20000 Hz, 47 Ohm, 700 mW, battery: with case + maximum
overhead, open, wired, detachable cable, 3.5 mm, 6.35 mm, 1.8 m, no microphone, 6 – 38000 Hz, 120 Ohm, 200 mW, battery: with case + maximum
overhead, closed, combined, detachable cable, 3.5 mm, 1.2 m, Bluetooth v5.0, AAC, game mode, 5 – 32000 Hz, 36 Ohm, L-plug, battery: up to 60 h
overhead, closed, combined, detachable cable, 3.5 mm, Bluetooth v5.3, active noise cancellation, foldable, 20 – 20000 Hz, 32 Ohm, 45 degree angle plug, battery: 690 mAh, up to 44 h
студийные, overhead, closed, wired, detachable cable, 3.5 mm, 6.35 mm, 3 m, no microphone, foldable, 15 – 28000 Hz, 38 Ohm, 1600 mW, battery: with case + maximum
gaming, overhead, closed, wired, 3.5 mm, USB-A, 1 m, multichannel, 15 – 25000 Hz, 60 Ohm, battery: with case + extension — 2 m
overhead, closed, wireless, Bluetooth v5.2, AAC, aptX, active noise cancellation, voice assistant, 10 – 22000 Hz, battery: 800 mAh, up to 50 h
overhead, closed, combined, detachable cable, 3.5 mm, Bluetooth v5.3, AAC, LDAC, active noise cancellation, foldable, 20 – 40000 Hz, 16 Ohm, battery: 750 mAh, up to 50 h
overhead, closed, combined, detachable cable, 2.5 mm (micro-Jack), Bluetooth v5.1, AAC, active noise cancellation, voice assistant, foldable, battery: up to 24 h