Brand: PIONEER
Category: Headphones
Document Type: Brochure/Marketing
Language: EN
Brochure/Marketing for SE-MJ21-K
Uploaded: Nov. 21, 2025, 8:24 p.m.
Product Features
ENGAGE: Get closer to your music with professionally-inspired sound tuning that enhances the presentation and impact of both high and low musical notes.
RELENTLESS PERFORMANCE: Experience full, accurate sound from large 40mm drivers engineered for high power handling and high efficiency.
LISTEN ANYWHERE: A portable, folding design makes it easy to take your music with you, fitting your lifestyle.
LISTEN LONG: Enjoy comfortable listening with a lightweight frame and soft, plush earpads.
FOCUS ON WHAT MATTERS: A closed, on-ear design minimizes outside noise, allowing you to concentrate on the music.
PLUG INTO YOUR MP3 OR OTHER PORTABLE AUDIO PLAYER: Compatible with most MP3/portable audio devices, including the latest generation iPhone® and iPod®.
Troubleshooting and error codes
SPECIFICATIONS
| MODEL | mm | inches | ||||
|---|---|---|---|---|---|---|
| W | H | D | W | H | D | |
| SE-MJ5 ŌM | 190 | 265 | 103 | 7.5 | 10.4 | 4.1 |
| SE-MJ71 Steel Wheels | 192 | 244 | 77 | 7.6 | 9.6 | 3.0 |
| SE-MJ31 Loop | 212 | 259 | 82 | 8.3 | 10.2 | 3.2 |
| SE-MJ21 EQ | 193 | 244 | 84 | 7.6 | 9.6 | 3.3 |