Compatible with (but not limited to):
- Bose QuietComfort QC35, QC3, QC25, QC2, QC15 Acoustic Noise Cancelling Headphones 
- Bose Around-Ear AE2w, AE2i, AE2, AE, TP-1. SoundLink around-ear wireless headphones II 
- Bose On-Ear, OE, OE2, OE2i, SoundTrue Headphones Around-Ear
- Sennheiser HD598, HD558, HD518, HD595, HD555, HD515, HD280 pro, HD280, HD380 Pro, HD201, HD419, HD429, HD429s, HD439, HD449, PC323D, PC350, PC363D 
- Audio-Technica ATH A900, M50, M50x 
- Sony MDR-1R, MDR-1RNC, MDRZX100W, MDRZX100B DJ, MDR-RF810RK, MDR-ZX300B / MDR-ZX300B.AE, MDR-V55R, MDR-ZX100P, MDR-ZX100B, MDR-ZX100W, MDR-ZX300R, MDR-ZX310L / MDR-ZX310R, MDR-XB400B, MDR-ZX600L, MDR-ZX600R, MDR-ZX600B, MDR-ZX600W, MDR-ZX610, MDR-ZX610, MDR-ZX610, MDR-ZX610, MDRZX310 
- Beats Mixr, EP, Pro 
- Bowers & Wilkins P3, P5, P7, B&W P9
And many other headphones

Note:
- Headphone case only, Headphone is not included.