AkuroPlays 
Official homepage: https://www.sennheiser-hearing.com/en-AU/p/hd-599/
RTings.com review: https://www.rtings.com/headphones/reviews/sennheiser/hd-599
Amazon description:
About this item
- Premium around ear, audiophile grade open back headphones
- Proprietary Sennheiser 38 millimetres, 50 ohm transducers deliver exceptional clarity, detail and dynamics
- Angled transducers inside the ear cups channel sound directly into your ears improving special realism
- Supreme comfort with padded headband and luxurious Extra Large ear pads allow for long listening sessions
- Suitable for home or mobile use with two cables included 3 meters detachable cable with 6. 3 millimetres jack and 1. 2 meters detachable cable with 3. 5 millimetres jack.
- Wide frequency response: 12 to 38,500 Hertz
