適用範囲(mm):バンド幅(mm):品番
| 適用範囲 | バンド幅 | W1 | W4 |
| 7-9mm | 6.0 | OneEar W1-9 | OneEar W4-9 |
| 8-10mm | 6.0 | OneEar W1-10 | OneEar W4-10 |
| 9-11mm | 6.5 | OneEar W1-11 | OneEar W4-11 |
| 10-12mm | 6.5 | OneEar W1-12 | OneEar W4-12 |
| 11-13mm | 6.5 | OneEar W1-13 | OneEar W4-13 |
| 12-14mm | 6.5 | OneEar W1-14 | OneEar W4-14 |
| 13-15mm | 7.0 | – | OneEar W4-15 |
| 14-16mm | 7.0 | OneEar W1-16 | OneEar W4-16 |
| 15-17mm | 7.0 | – | OneEar W4-17 |
| 16-18mm | 7.0 | OneEar W1-18 | OneEar W4-18 |
| 17-19mm | 7.5 | – | OneEar W4-19 |
| 18-20mm | 7.5 | – | OneEar W4-20 |